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
收藏
页码：90 / 94
页数：5
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