High throughput extended incremental coefficient-lookahead filters based adaptive decision feedback equalizer

Yu Chun Lin*, Muh Tian Shiue, Shyh-Jye Jou

*Corresponding author for this work

研究成果: Article同行評審

摘要

A novel time domain adaptive decision feedback equalizer (ADFE) architecture for a multi-gigabit 2-PAM wireline communication systems is proposed. The maximum throughput rates of traditional ADFEs are limited due to the loops in the circuits. We propose to do lookahead in coefficients instead of data to break the throughput rate limitation since it is less sensitive to tap number of feedback filter. To reduce hardware area, combination formulas for incremental coefficient-lookahead filters are proposed. The feedback loops of data equalization are transferred to the Extended Circuit which is a loop-free circuit. Therefore, approximations for slicer outputs are avoided and the parallelism factor can be small after fully pipelining. Besides, multipliers in a lookahead circuit except Extended Circuit are replaced with multiplexers. From the simulation results of a 10Gbps multi-mode fiber system, the hardware complexities of data-lookahead and the previously designed coefficient-lookahead ADFE are respectively 4.1 and 1.9 times the equivalent gate count of the proposed design which has only 0.3dB SNR degradation than traditional ADFE.

原文English
頁(從 - 到)115-126
頁數12
期刊International Journal of Electrical Engineering
19
發行號3
出版狀態Published - 1 六月 2012

指紋 深入研究「High throughput extended incremental coefficient-lookahead filters based adaptive decision feedback equalizer」主題。共同形成了獨特的指紋。

引用此