Optimum channel estimation pilot design for CDD-OFDM with application to DVB

被引：1

作者：

Lu, Sili ^{[1
]}

Al-Dhahir, Naofal ^{[1
]}

机构：

[1] Univ Texas Dallas, Richardson, TX 75083 USA

来源：

2008 42ND ANNUAL CONFERENCE ON INFORMATION SCIENCES AND SYSTEMS, VOLS 1-3 | 2008年

关键词：

OFDM; channel estimation; CDD; SISO; MISO;

D O I：

10.1109/CISS.2008.4558501

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Cyclic delay diversity (CDD) is a low-complexity standard-conformable transmit diversity technique for coded orthogonal frequency division multiplexing (OFDM) systems. However, it makes channel estimation more challenging due to the increased frequency-selectivity of the channel. In this paper, we propose a novel pilot-aided channel estimation scheme for CDD-OFDM. By alternating and optimizing the cyclic delay parameter for adjacent OFDM symbols, we design a simple yet efficient channel estimation scheme for frequency-selective channels and evaluate its effectiveness for a DVB-T system.

引用

页码：90 / 94

页数：5

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