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Novel space-time modulation and coding techniques for commerical broadband wireless access system

With limited available radio frequency spectrum for broadband wireless services, it is essential to explore new bandwidth efficient waveforms with robust error correction code. While the Shannon's theory of high-speed digital communications in the time domain is known, there has been little progress to utilize additional dimensions in the spatial domain as information carriers. In this paper, a true space-time wireless system based on novel ideas in space-time modulation and coding technology is introduced. The advantages of this new technology include enhanced spectral efficiency with more channels to support larger number of subscribers and higher data rate for near real-time multimedia applications. The degree of success in achieving these objectives will not only affect the system performance, but will directly impact the profit of a commercial wireless company.