| Paper: | SPCOM-L6.4 | ||
| Session: | MIMO Precoder Design | ||
| Time: | Friday, May 21, 10:30 - 10:50 | ||
| Presentation: | Lecture | ||
| Topic: | Signal Processing for Communications: Space-Time/MIMO Channel Equalization | ||
| Title: | ITERATIVE JOINT OPTIMIZATION OF MINIMAL TRANSMIT REDUNDANCY FIR ZERO-FORCING PRECODER-EQUALIZER SYSTEM FOR MIMO-ISI CHANNEL | ||
| Authors: | Man-Wai Kwan; Hong Kong University of Science and Technology | ||
| Chi-Wah Kok; Hong Kong University of Science and Technology | |||
| Abstract: | An iterative joint FIR precoder-equalizer optimization algorithm for MIMO ISI channel is proposed. This algorithm provides a suboptimal solution of the FIR zero-forcing precoder (ZFP) and equalizer (ZFE) for the Space-Time Modulated Code (STMC) system. Although serval joint precoder-equalizer design methods for MIMO ISI were proposed, existing design methods require a long guard period, which is larger than or equal to the channel order, to be inserted in the transmitted signal for avoiding the inter-block interference (IBI). This reduces the spectral efficiency of those systems. In this paper, we adopted the STMC structure, which does not require a long guard period. Using the FIR LS ZFE designing techniques previously proposed by us, we proposed a FIR LS ZFP design method. By combining the proposed ZFP design method with the ZFE design method, we propose an iterative joint FIR precoder-equalizer optimization algorithm. Although the iterative algorithm can only provide the suboptimal precoder-equalizer design, simulation results showed that substantial performance gain can be obtained when comparing with those cases without the joint precoder-equalizer design. | ||
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