Transmit diversity generally requires more than one antenna at transmitter. However, many wireless devices are limited by size or hardware complexity to one antenna. Recently methods known as cooperative communication has been proposed that enables single antenna mobiles in a multi-user environment to share their antennas and generate a virtual multiple-antenna transmitter that allows them to achieve transmit diversity.
In this project, we designed of non-cooperative Orthogonal Frequency Division Multiplexing (OFDM) and Cooperative-OFDM communication system and comparing the performance of non-cooperative-OFDM and cooperative OFDM. Carrier frequency offset (CFO) mitigation is critical for OFDM based cooperative transmissions because even small CFO per transmitter may lead to severe performance loss, especially when the number of cooperative transmitters is large. Here, we showed that cyclic prefix (CP) can be exploited to mitigate
or even remove completely the CFO.
or even remove completely the CFO.
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