An Improved Sampling Frequency Synchronous Algorithm for OFDM System

被引：0

作者：

Ma, Zhen-qiu ^{[1
]}

Cui, Wei ^{[1
]}

Gong, Xiao ^{[2
]}

Wu, Si-liang ^{[1
]}

机构：

[1] Beijing Inst Technol, Dept Elect Engn, Sch Informat Sci & Technol, Beijing 100081, Peoples R China

[2] Integrated Circuits Lab, Beijing 100080, Peoples R China

来源：

ICSP: 2008 9TH INTERNATIONAL CONFERENCE ON SIGNAL PROCESSING, VOLS 1-5, PROCEEDINGS | 2008年

关键词：

OFDM; Sampling Frequency Synchronization; CMMB; alpha beta Filter;

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The frequency offset between the transmitter and the receiver would severely impact the performance of Orthogonal Frequency Division Multiplexing (OFDM) system and must be compensated One of effective sampling frequency, synchronous algorithms was proposed by H. Shafiee; however, when this original synchronous algorithm is used to the OFDM system with a large number of sub-carriers, the existence of residual phase rotation may badly degrade the performance of system. An improved sampling frequency asynchronous algorithm is proposed in this poper. The novel algorithm presented here introduces the alpha beta filter to delete the residual phase rotation. The simulation results of applying this novel algorithm to China Mobile Digital Multimedia Broadcasting (CMMB) demonstrate that a 0.5dB similar to 1dB performance gain can be obtained, compared with the original one.

引用

页码：1797 / +

页数：2

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