Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying
In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence genera...
Ausführliche Beschreibung
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| Autor*in: |
Jun-yi Duan [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2015 |
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| Übergeordnetes Werk: |
Enthalten in: IEEE transactions on circuits and systems / 2 - New York, NY : Institute of Electrical and Electronics Engineers, 1992, 62(2015), 1, Seite 90-94 |
|---|---|
| Übergeordnetes Werk: |
volume:62 ; year:2015 ; number:1 ; pages:90-94 |
| Links: |
|---|
| DOI / URN: |
10.1109/TCSII.2014.2362691 |
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OLC1959254545 |
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| 245 | 1 | 0 | |a Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying |
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| 520 | |a In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. | ||
| 650 | 4 | |a reference-adaptive CDSK | |
| 650 | 4 | |a reference-adaptive CDSK (RA-CDSK) | |
| 650 | 4 | |a SIMO-CDSK | |
| 650 | 4 | |a receiver | |
| 650 | 4 | |a chaotic communication | |
| 650 | 4 | |a single-input-multiple-output CDSK | |
| 650 | 4 | |a discrete-time chaotic circuit | |
| 650 | 4 | |a reference signal | |
| 650 | 4 | |a Gaussian approximation | |
| 650 | 4 | |a intrasignal interference | |
| 650 | 4 | |a correlation delay shift keying (CDSK) | |
| 650 | 4 | |a bit-error-rate | |
| 650 | 4 | |a discrete-time implementations | |
| 650 | 4 | |a phase shift keying | |
| 650 | 4 | |a Gaussian processes | |
| 650 | 4 | |a Interference | |
| 650 | 4 | |a RA-CDSK | |
| 650 | 4 | |a error statistics | |
| 650 | 4 | |a approximation theory | |
| 650 | 4 | |a information-bearing signal | |
| 650 | 4 | |a generalized CDSK | |
| 650 | 4 | |a reference-adaptive correlation delay shift keying | |
| 650 | 4 | |a bit-error rate (BER) | |
| 650 | 4 | |a Correlators | |
| 650 | 4 | |a AWGN channels | |
| 650 | 4 | |a radio receivers | |
| 650 | 4 | |a BER performance | |
| 650 | 4 | |a Delays | |
| 650 | 4 | |a noise interference | |
| 650 | 4 | |a correlation delay shift keying | |
| 650 | 4 | |a additive white Gaussian noise channel | |
| 650 | 4 | |a Bit error rate | |
| 650 | 4 | |a adjacent information symbols | |
| 650 | 4 | |a Receivers | |
| 650 | 4 | |a GCDSK | |
| 650 | 4 | |a Methods | |
| 650 | 4 | |a Approximation theory | |
| 650 | 4 | |a Discrete-time systems | |
| 650 | 4 | |a Random noise theory | |
| 650 | 4 | |a Chaos theory | |
| 650 | 4 | |a Innovations | |
| 650 | 4 | |a Usage | |
| 700 | 0 | |a Guo-ping Jiang |4 oth | |
| 700 | 0 | |a Hua Yang |4 oth | |
| 773 | 0 | 8 | |i Enthalten in |t IEEE transactions on circuits and systems / 2 |d New York, NY : Institute of Electrical and Electronics Engineers, 1992 |g 62(2015), 1, Seite 90-94 |w (DE-627)131044753 |w (DE-600)1100793-X |w (DE-576)028047451 |x 1549-7747 |7 nnns |
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10.1109/TCSII.2014.2362691 doi PQ20160617 (DE-627)OLC1959254545 (DE-599)GBVOLC1959254545 (PRQ)c2419-76385f1b8981cd503718a012181783411acf524dc516cb7dd8504a8ef20ce3cc0 (KEY)0213975820150000062000100090referenceadaptivecdskanenhancedversionofcorrelatio DE-627 ger DE-627 rakwb eng 000 620 DNB Jun-yi Duan verfasserin aut Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage Guo-ping Jiang oth Hua Yang oth Enthalten in IEEE transactions on circuits and systems / 2 New York, NY : Institute of Electrical and Electronics Engineers, 1992 62(2015), 1, Seite 90-94 (DE-627)131044753 (DE-600)1100793-X (DE-576)028047451 1549-7747 nnns volume:62 year:2015 number:1 pages:90-94 http://dx.doi.org/10.1109/TCSII.2014.2362691 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6922509 http://search.proquest.com/docview/1642128068 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-MAT GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2005 AR 62 2015 1 90-94 |
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10.1109/TCSII.2014.2362691 doi PQ20160617 (DE-627)OLC1959254545 (DE-599)GBVOLC1959254545 (PRQ)c2419-76385f1b8981cd503718a012181783411acf524dc516cb7dd8504a8ef20ce3cc0 (KEY)0213975820150000062000100090referenceadaptivecdskanenhancedversionofcorrelatio DE-627 ger DE-627 rakwb eng 000 620 DNB Jun-yi Duan verfasserin aut Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage Guo-ping Jiang oth Hua Yang oth Enthalten in IEEE transactions on circuits and systems / 2 New York, NY : Institute of Electrical and Electronics Engineers, 1992 62(2015), 1, Seite 90-94 (DE-627)131044753 (DE-600)1100793-X (DE-576)028047451 1549-7747 nnns volume:62 year:2015 number:1 pages:90-94 http://dx.doi.org/10.1109/TCSII.2014.2362691 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6922509 http://search.proquest.com/docview/1642128068 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-MAT GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2005 AR 62 2015 1 90-94 |
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10.1109/TCSII.2014.2362691 doi PQ20160617 (DE-627)OLC1959254545 (DE-599)GBVOLC1959254545 (PRQ)c2419-76385f1b8981cd503718a012181783411acf524dc516cb7dd8504a8ef20ce3cc0 (KEY)0213975820150000062000100090referenceadaptivecdskanenhancedversionofcorrelatio DE-627 ger DE-627 rakwb eng 000 620 DNB Jun-yi Duan verfasserin aut Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage Guo-ping Jiang oth Hua Yang oth Enthalten in IEEE transactions on circuits and systems / 2 New York, NY : Institute of Electrical and Electronics Engineers, 1992 62(2015), 1, Seite 90-94 (DE-627)131044753 (DE-600)1100793-X (DE-576)028047451 1549-7747 nnns volume:62 year:2015 number:1 pages:90-94 http://dx.doi.org/10.1109/TCSII.2014.2362691 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6922509 http://search.proquest.com/docview/1642128068 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-MAT GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2005 AR 62 2015 1 90-94 |
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10.1109/TCSII.2014.2362691 doi PQ20160617 (DE-627)OLC1959254545 (DE-599)GBVOLC1959254545 (PRQ)c2419-76385f1b8981cd503718a012181783411acf524dc516cb7dd8504a8ef20ce3cc0 (KEY)0213975820150000062000100090referenceadaptivecdskanenhancedversionofcorrelatio DE-627 ger DE-627 rakwb eng 000 620 DNB Jun-yi Duan verfasserin aut Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage Guo-ping Jiang oth Hua Yang oth Enthalten in IEEE transactions on circuits and systems / 2 New York, NY : Institute of Electrical and Electronics Engineers, 1992 62(2015), 1, Seite 90-94 (DE-627)131044753 (DE-600)1100793-X (DE-576)028047451 1549-7747 nnns volume:62 year:2015 number:1 pages:90-94 http://dx.doi.org/10.1109/TCSII.2014.2362691 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6922509 http://search.proquest.com/docview/1642128068 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-MAT GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2005 AR 62 2015 1 90-94 |
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10.1109/TCSII.2014.2362691 doi PQ20160617 (DE-627)OLC1959254545 (DE-599)GBVOLC1959254545 (PRQ)c2419-76385f1b8981cd503718a012181783411acf524dc516cb7dd8504a8ef20ce3cc0 (KEY)0213975820150000062000100090referenceadaptivecdskanenhancedversionofcorrelatio DE-627 ger DE-627 rakwb eng 000 620 DNB Jun-yi Duan verfasserin aut Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying 2015 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage Guo-ping Jiang oth Hua Yang oth Enthalten in IEEE transactions on circuits and systems / 2 New York, NY : Institute of Electrical and Electronics Engineers, 1992 62(2015), 1, Seite 90-94 (DE-627)131044753 (DE-600)1100793-X (DE-576)028047451 1549-7747 nnns volume:62 year:2015 number:1 pages:90-94 http://dx.doi.org/10.1109/TCSII.2014.2362691 Volltext http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=6922509 http://search.proquest.com/docview/1642128068 GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-MAT GBV_ILN_70 GBV_ILN_2002 GBV_ILN_2005 AR 62 2015 1 90-94 |
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000 620 DNB Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying reference-adaptive CDSK reference-adaptive CDSK (RA-CDSK) SIMO-CDSK receiver chaotic communication single-input-multiple-output CDSK discrete-time chaotic circuit reference signal Gaussian approximation intrasignal interference correlation delay shift keying (CDSK) bit-error-rate discrete-time implementations phase shift keying Gaussian processes Interference RA-CDSK error statistics approximation theory information-bearing signal generalized CDSK reference-adaptive correlation delay shift keying bit-error rate (BER) Correlators AWGN channels radio receivers BER performance Delays noise interference correlation delay shift keying additive white Gaussian noise channel Bit error rate adjacent information symbols Receivers GCDSK Methods Approximation theory Discrete-time systems Random noise theory Chaos theory Innovations Usage |
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Reference-Adaptive CDSK: An Enhanced Version of Correlation Delay Shift Keying |
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In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. |
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In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. |
| abstract_unstemmed |
In this brief, a new chaotic communication scheme, named reference-adaptive correlation delay shift keying (RACDSK) is proposed as an enhanced version of CDSK. According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. Moreover, for different E b /N 0 levels, the best BER performance of RA-CDSK can be gained with a reasonable spreading factor. |
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According to the relationship between adjacent information symbols, our scheme employs the information-bearing signal or the sequence generated by the discrete-time chaotic circuit as the reference signal for the next bit period. As a result, compared with CDSK and its improved schemes, the uncertainty caused by intrasignal interference and noise interference is made lower when the received signal correlates with its delayed version at the receiver. The bit-error-rate (BER) performance of our scheme is also studied analytically based on Gaussian approximation for discrete- time implementations. Simulations in additive white Gaussian noise channel are performed and compared with CDSK, generalized CDSK (GCDSK), and single-input-multiple-output CDSK (SIMO-CDSK). Results show that the BER performance of RACDSK is always much better than CDSK and GCDSK, and can even outperform SIMO-CDSK with a small spreading factor and at a high E b /N 0 level. 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