Parallel Channel Equalizer for Mobile OFDM Baseband Receivers

Abstract:

Mobile OFDM refers to OFDM systems with fast moving transceivers, contrastive to traditional OFDM systems whose transceivers are stationary or with a low velocity. An efficient implementation of the channel equalization for mobile OFDM is presented in this paper. Based on the particular OFDM subcarrier allocations, the channel equalizer is split into separated sub-equalizers, enabling a concurrent implementation. This parallel equalizer is implemented on an FPGA platform. The experimental results show that without an efficient design, mobile OFDM leads to an unacceptable hardware cost. The proposed parallel equalizer for mobile OFDM can compensate for time-varying channels, in which a traditional OFDM receiver fails to operate, although the paid price is that the hardware resource is reasonably increased.

• Periodical: Applied Mechanics and Materials (Volumes 333-335)
• Pages: 640-645
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.333-335.640
• Online since: July 2013
• Authors: Wei Ding*, Tao Xu, Min Song, Wei Gu
• Keywords: Baseband, Channel Equalizer, Mobile OFDM, Time-Varying

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