OFDM系统中优化的泛化复指数基扩展模型

doi:10.3969/j.issn.1001-2400.2012.03.021

Abstract

Abstract:

In wireless communication systems, high-speed mobile terminals induce the channel to be time selective. In this paper, the generalized complex exponential basis expansion model (GCE-BEM) is optimized for the time selective channel of the orthogonal frequency division multiplexing system. The proposed model can adapt the model coefficient according to the Doppler frequency estimation situation, becoming the GCE-BEM with a fixed or varying coefficient. It can effectively eliminate high-frequency noise without increasing the computational complexity, reduce the model error, and improve the system performance.

Key words: OFDM, channel estimation, time selective channel, basis expansion model

ZHANG Qinjuan;WU Muqing;GUO Qilin;ZHANG Rui. Optimized generalized complex exponential basis expansion in the OFDM system[J].J4, 2012, 39(3): 131-135.

References

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Optimized generalized complex exponential basis expansion in the OFDM system

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