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Comparisons of Diversity Techniques for OFDM Systems in Interference-Limited Environments  

Rim, Min-Joong (동국대학교 정보통신공학과)
Kim, Hong-Seog (배재대학교 전자공학과)
Abstract
This paper compares the performances with space time coding and cyclic delay diversity techniques for OFDM systems in interference-limited environments. While a communication system usually use a diversity technique to improve its own performance, it is also necessary to consider the interference effects to other users as well if the system is operated in interference-limited environments. When there is no interference from or to other users, space time coding technique results in better performance than cyclic delay diversity. However, cyclic delay diversity can be better than space time coding if interferences to other users are considered.
Keywords
OFDM; Space Time Coding; Cyclic Delay Diversity; Interference; Diversity;
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