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It is a significant challenge to support high data rate services at high mobile speeds. In this paper, an efficient diversity-exploiting user resource structure, namely evolving- type resource structure, for fast time-varying frequency-selective fading channel environments is designed. This newly proposed resource structure enjoys the advantages of both band-type and interleaved-type structures and...
Orthogonal frequency division multiple access (OFDMA) has been used for broadband wireless multiple access. The performance of OFDMA system can be improved by using multiple antennas with space time coding to get transmit and receive diversity. Channel information estimated at receiver for space time decoding can be used for sub-channels allocation at transmitter. In this paper, we propose a method...
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