MIMO cooperative diversity in a transmit power limited environment

Allan J. Jardine, Stephen McLaughlin, John S Thompson

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

2 Citations (Scopus)


This paper considers a fading relay channel where the total transmit power used is constrained to be equal to that of the standard single-hop channel. The relay channel used operates in what is termed as MIMO cooperative diversity mode, where the source transmits to both relay and destination terminals in the first instance. Both the source and relay then transmit to the destination in the second instance. Initially the cooperative diversity framework is introduced to consider system constraints so a direct and fair comparison with the single-hop case can be made. In-particular a power constraint is placed on the system and the optimal transmit power levels are derived and presented. The derived technique for finding the optimal transmit power levels is then used to demonstrate the advantages of using cooperative diversity in a wireless network. The results presented show that MIMO cooperative diversity offers a 3.4dB increase in spectral efficiency at 5% outage, with no additional cost incurred in transmit time, power or bandwidth.

Original languageEnglish
Title of host publicationIEEE International Conference on Communications, 2007
Number of pages6
ISBN (Print)1-4244-0353-7
Publication statusPublished - 2007
EventIEEE International Conference on Communications 2007 - Glasgow, Scotland, United Kingdom
Duration: 24 Jun 200728 Jun 2007


ConferenceIEEE International Conference on Communications 2007
Abbreviated titleICC 2007
Country/TerritoryUnited Kingdom
CityGlasgow, Scotland


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