Broadband Wireless Access with Cooperative Diversity Technique for MIMO Node

A combination of OFDM with FDMA called OFDMA is regarded as a promising solution for improving the performance of BWA with multiple users. Although transmit diversity is clearly advantageous on OFDMA systems, it may not be possible that practical OFDMA systems have more than two antennas due to size, cost, or hardware limitations. Cooperative networks aim to utilize the available terminals as a collection of distributed antennas for the transmission of signals from one end of the network to the other. This paper focuses on design and performance evaluation of IEEE 802.16 MIMO-OFDMA systems with cooperative diversity. In this paper, for high-rate and reliable transmission, efficient transmission code is proposed.