A simple iterative bi-directional equalization for EDGE wireless systems
Xiang-guo Tang; Zhi Ding
Global Telecommunications Conference, 2002. GLOBECOM apos;02. IEEE
Volume 1, Issue , 17-21 Nov. 2002 Page(s): 287 - 291 vol.1
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Summary: We present a new and simple iterative equalization scheme for EDGE wireless systems. The new method improves the detection reliability through bi-directional processing on the DDF-SOVA equalizer. Relying on the mechanism of decision feedback in the DDF (delayed decision feedback) equalizer, bi-directional processing can be performed to exploit the time diversity of the received signal bursts for more reliable equalizer output. A special case of DFE-SISO (soft-input/soft-output) equalizer is also discussed. Simulation results show that, with modest increase in computational complexity, the bi-directional turbo equalizer can achieve significant performance gain over the single-directional turbo equalizer.

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