Blind iterative channel estimation and LDPC decoding for OFDM systems

被引：0

作者：

Oh, MK ^{[1
]}

Kwon, YH ^{[1
]}

Park, JH ^{[1
]}

Park, DJ ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept EECS, Taejon 305701, South Korea

来源：

VTC2005-SPRING: 2005 IEEE 61ST VEHICULAR TECHNOLOGY CONFERENCE, VOLS 1-5, PROCEEDINGS | 2005年

关键词：

low-density parity-check (LDPC); OFDM; channel estimation; DQPSK; blind iterative receiver;

D O I：

暂无

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

This paper aims at designing a novel blind iterative receiver for LDPC coded OFDM systems, where pilot symbols for estimating the channel are not inserted in the transmitter. Incorporating the differential QPSK scheme and LDPC decoder, we show that the decision-directed channel estimator can produce the channel information to improve performance of the LDPC decoder. The resulting blind iterative receiver can resolve the drawbacks of differential detection, an improved channel estimate and BER performance in the frequency selective channel, while keeping bandwidth efficiency. Simulation results verify performance of our scheme.

引用

页码：514 / 517

页数：4

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