Asynchronous multiple-access interference suppression and chip waveform selection with aperiodic random sequences

A linear decentralized receiver capable of suppressing multiple-access interference (MAI) for asynchronous direct-sequence code-division multiple-access (DS-CDMA) systems with aperiodic random signature sequences is proposed. Performance bounds on this receiver are also obtained. Using them as performance measures, the problem of chip waveform selection in DS-CDMA systems with the proposed receiver under the near-far scenario is investigated. In particular, the performance of several practical chip waveforms is compared. An LMS-type adaptive algorithm is developed to obtain the parameters needed in the receiver, which only requires the signature sequence and coarse timing information of the desired user.

[1]  S. Verdú.  Optimum multi-user detection with point-process observations , 1985, IEEE Conference on Decision and Control.

[2]  Harry Leib,et al.  Matched Filters with Interference Suppression Capabilities for DS-CDMA , 1996, IEEE J. Sel. Areas Commun..

[3]  H. Vincent Poor,et al.  An Introduction to Signal Detection and Estimation , 1994, Springer Texts in Electrical Engineering.

[4]  H. Vincent Poor,et al.  An introduction to signal detection and estimation (2nd ed.) , 1994 .

[5]  Upamanyu Madhow.  Blind adaptive interference suppression for the near-far resistant acquisition and demodulation of direct-sequence CDMA signals , 1997, IEEE Trans. Signal Process..

[6]  Sergio Verdu,et al.  Multiuser Detection , 1998 .

[7]  Sergio Verdú,et al.  Near-far resistance of multiuser detectors in asynchronous channels , 1990, IEEE Trans. Commun..

[8]  Harry Leib,et al.  Chip shaping and channel coding for CDMA , 1996, Eur. Trans. Telecommun..

[9]  Laurence B. Milstein,et al.  A Noice Whitening approach to Multiple-Access Noise Rejection - Part II: Implementation Issues , 1996, IEEE J. Sel. Areas Commun..

[10]  Laurence B. Milstein,et al.  A noise-whitening approach to multiple access noise rejection .I. Theory and background , 1994, IEEE J. Sel. Areas Commun..

[11]  Michael D. Zoltowski,et al.  A Linear Receiver for Direct-Sequence Spread-Spectrum Multiple-Access Systems with Antenna Arrays and Blind Adaptation , 1998, IEEE Trans. Inf. Theory.

[12]  Andrew J. Viterbi,et al.  Very Low Rate Convolutional Codes for Maximum Theoretical Performance of Spread-Spectrum Multiple-Access Channels , 1990, IEEE J. Sel. Areas Commun..

[13]  Tat-Ming Lok,et al.  An Asymptotic Analysis of DS/SSMA Communication Systems with General Linear Modulation and Error Control Coding , 1998, IEEE Trans. Inf. Theory.

[14]  F. Amoroso,et al.  The bandwidth of digital data signal , 1980, IEEE Communications Magazine.

[15]  James Stanley Lehnert.  Chip Waveform Selection in Offset-Quaternary Direct-Sequence Spread-Spectrum Multiple-Access Communications , 1981 .

[16]  Zoran Zvonar,et al.  Multiuser detection for CDMA systems , 1995, IEEE Wirel. Commun..