Role of coding in CDMA systems with multiuser detection

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

Abstract

In a direct sequence code division multiple access (CDMA) system, a fixed bandwidth expansion could be allocated to either error correcting coding or modulation signal spreading. The role of coding in CDMA systems that employ multiuser detection is explored here. A comparison is made between the maximum throughputs (in bits/chip or bits/s/Hz) achievable using multiuser detection and single-user detection, for both 'single-cell' and cellular systems. For the single-cell scenario, our results indicate that asynchronous multiuser detection systems employing long (random) spreading sequences and low rate coding, can provide considerable improvements in spectral efficiency over single-user detection systems. However, for cellular systems with universal frequency reuse, the improvement is spectral efficiency (per cell) offered by multiuser detection may not be as significant.

Original languageEnglish (US)
Title of host publicationIEEE International Conference on Personal Wireless Communications
PublisherIEEE
Pages470-474
Number of pages5
StatePublished - 1997
Externally publishedYes
EventProceedings of the 1997 IEEE International Conference on Personal Wireless Communications - Mumbai, India
Duration: Dec 17 1997Dec 19 1997

Other

OtherProceedings of the 1997 IEEE International Conference on Personal Wireless Communications
CityMumbai, India
Period12/17/9712/19/97

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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