Robust Channel Estimation for 802.11n (MIMO-OFDM) Systems

被引：0

作者：

Ganesan, Raghu ^{[1
]}

Gunturi, Sarma ^{[1
]}

机构：

[1] Texas Instruments India, Wireless Connect Solut, Bangalore, Karnataka, India

来源：

2014 INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING AND COMMUNICATIONS (SPCOM) | 2014年

关键词：

CARRIER FREQUENCY OFFSET; BER;

D O I：

暂无

中图分类号：

TP301 [理论、方法];

学科分类号：

081202 ;

摘要：

In a receiver for multiple input multiple output (MIMO) 802.11n system, the residual carrier frequency offset (CFO), after synchronization with training symbols in the preamble of a packet, affects the accuracy of channel estimation. The residual CFO causes inter-carrier interference as well as interspatial stream interference. A decision directed algorithm to estimate and correct the residual CFO before channel estimation is presented. A 802.11n packet transmitted with high-throughput mixed mode (HT-MM) packet format has both legacy and high throughput (HT) training fields. 'Typically, the channel is estimated only with HI training fields. In this paper, a channel estimation technique which uses both the legacy and high-throughput training field is proposed. Simulation results demonstrating the improvement in channel estimation and packet error rate (PER) performance are also presented.

引用

页数：5

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