Multi-source cooperation with full-diversity spectral-efficiency and controllable-complexity

Alejandro Ribeiro, Renqiu Wang, Georgios B Giannakis

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

2 Scopus citations

Abstract

We develop a general framework for multi-source cooperation (MSC) protocols to improve diversity and spectral efficiency relative to repetition based alternatives that rely on single-source cooperation. The novel protocols are flexible to balance tradeoffs among diversity, spectral efficiency and decoding-complexity. Users are grouped in clusters and follow a two-phase MSC protocol which involves time division multiple access (TDMA) to separate users within a cluster, and code division multiple access (CDMA) to separate clusters. An attractive protocol under the general MSC framework, relies on distributed complex field coding (DCFC) to enable diversity order equal to the number of users per cluster. Cluster separation based on orthonormal spreading sequences leads to spectral efficiency 1/2. When the number of clusters exceeds the amount of spreading, spectral efficiency can be enhanced without sacrificing diversity, at the expense of controllable increase in complexity.

Original languageEnglish (US)
Title of host publication2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
DOIs
StatePublished - Dec 1 2006
Event2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC - Cannes, France
Duration: Jul 2 2006Jul 5 2006

Other

Other2006 IEEE 7th Workshop on Signal Processing Advances in Wireless Communications, SPAWC
CountryFrance
CityCannes
Period7/2/067/5/06

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