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The research of space-time coding technology

The next generation of mobile communication can increase the data transfer rate in the limited bandwidth of high-capacity transmission. The space-time coding technique is the important technology to solve the bandwidth problem based on OFDM (orthogonal frequency division multiplexing), it can take full advantage of multi-scattering wireless channel which caused by multipath environment by enhancing the ability of anti-fading. In this paper, the space-time coding techniques have been studied, three kinds of space-time coding principle of encoding and decoding have been analyzed. By comparing the complexity of the decoding and improving of space-time block coding, a new coding method - a new space-time block coding is proposed. And the simulation shows that the performance of the improved space-time coding system and the code rate are significantly improved.