Design of LDPC coded Equalization over Partial Response Channel
| Autor: | Wei-Feng Hung, 洪偉峰 |
|---|---|
| Rok vydání: | 2006 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 94 The curve-fitting techniques to design low-density parity check (LDPC) codes motivated by results for erasure channels have already been applied in the communications literature. In the paper authored by ten Brink, et al, the curve-fitting approach for BPSK on the AWGN channel are developed and extended to MIMO fading channels. It is natural to consider once again applying this methodology in the outer coding of turbo equalization system, which is a joint equalization and decoding process to eliminate intersymbol interference. With the proposed scheme, we show a design of LDPC coded equalization system over partial response channel. The design is based on plotting various extrinsic information transfer (EXIT) curves of combined detector/equalizer and variable-node decoder to match the EXIT characteristics of check-node decoder. Simulation results verify that the performances of designed irregular codes are better than regular LDPC codes and converge at lower SNR with the same number of iteration. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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