EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding

R. A. Riaz, M. El-Hajjar, Q. Z. Ahmed, S. X. Ng, S. Chen, L. Hanzo

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper presents a novel UltraWideBand (UWB), Direct Sequence Code Division Multiple Access (DS-CDMA) aided system designed for the IEEE 802.15.3a UWB channel specifications. Substantial performance improvements can be attained by serially concatenated channel encoding combined with a Unity Rate Code (URC). We compare the performance of the iterative aided decoding Correlation (Corr) and Minimum Mean Square Error (MMSE) detectors exchanging extrinsic information between the URC's decoder as well as the outer Recursive Systematic Convolutional (RSC) code's decoder. Moreover, the iterative decoding convergence analysis of the proposed system is carried out with the aid of Extrinsic Information Transfer (EXIT) charts. As expected, the iteratively decoded fully-loaded system employing MMSE detection outperforms its counterpart employing the equivalent Corr detection. Explicitly, UWB DS-CDMA using the MMSE detector attains a BER of 10-5 at Eb/No = 2dB when supporting U = 32 users employing i = 12 decoding iterations, while the same system using the Corr detector operates at BER-10-1.

LanguageEnglish
Title of host publicationThe 68th IEEE Vehicular Technology Conference, VTC 2008-Fall
Number of pages5
DOIs
Publication statusPublished - 1 Dec 2008
Externally publishedYes
Event68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference - Calgary, AB, Canada
Duration: 21 Sep 200824 Sep 2008

Conference

Conference68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference
CountryCanada
CityCalgary, AB
Period21/09/0824/09/08

Fingerprint

Iterative Decoding
Iterative decoding
Information Transfer
Code Division multiple Access
Chart
Ultra-wideband (UWB)
Mean square error
Code division multiple access
Minimum Mean Square Error
Decoding
Detector
Correlation detectors
Detectors
Convolutional codes
Error detection
Convolutional Codes
Error Detection
Convergence Analysis
Specifications
Encoding

Cite this

Riaz, R. A., El-Hajjar, M., Ahmed, Q. Z., Ng, S. X., Chen, S., & Hanzo, L. (2008). EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding. In The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall [4657075] https://doi.org/10.1109/VETECF.2008.243
Riaz, R. A. ; El-Hajjar, M. ; Ahmed, Q. Z. ; Ng, S. X. ; Chen, S. ; Hanzo, L. / EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding. The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall. 2008.
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Riaz, RA, El-Hajjar, M, Ahmed, QZ, Ng, SX, Chen, S & Hanzo, L 2008, EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding. in The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall., 4657075, 68th Semi-Annual IEEE Vehicular Technology, VTC 2008-Fall, Conference, Calgary, AB, Canada, 21/09/08. https://doi.org/10.1109/VETECF.2008.243

EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding. / Riaz, R. A.; El-Hajjar, M.; Ahmed, Q. Z.; Ng, S. X.; Chen, S.; Hanzo, L.

The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall. 2008. 4657075.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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Riaz RA, El-Hajjar M, Ahmed QZ, Ng SX, Chen S, Hanzo L. EXIT chart aided design of DS-CDMA UltraWideBand systems using iterative decoding. In The 68th IEEE Vehicular Technology Conference, VTC 2008-Fall. 2008. 4657075 https://doi.org/10.1109/VETECF.2008.243