Modification of turbo equalization with LMMSE equalizer

Sen Jiang; Yong-Qiang Zhang; Hong Sun; Ping Li

doi:10.1117/12.523474

7 May 2004 Modification of turbo equalization with LMMSE equalizer

Sen Jiang, Yong-Qiang Zhang, Hong Sun, Ping Li

Proceedings Volume 5281, Optical Transmission, Switching, and Subsystems; (2004) https://doi.org/10.1117/12.523474
Event: Asia-Pacific Optical and Wireless Communications, 2003, Wuhan, China

Abstract

This paper investigates turbo equalization (TE) with linear minimum mean squared error (LMMSE) equalizer, which has much lower complexity but much worse performance than TE with maximum a posteriori (MAP) equalizer because of inefficient information processing of LMMSE equalizer. Motivated by forward and backward recursions of MAP algorithm, three methods are presented to improve turbo equalization with LMMSE equalizer (TE-LMMSE). In the simulation, they all obtain more than 2.5-dB performance gain over TE-LMMSE with no or some complexity price.

Citation Download Citation

Sen Jiang, Yong-Qiang Zhang, Hong Sun, and Ping Li "Modification of turbo equalization with LMMSE equalizer", Proc. SPIE 5281, Optical Transmission, Switching, and Subsystems, (7 May 2004); https://doi.org/10.1117/12.523474

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