Space-Frequency OFDM System with Null-Steering Beamformer

Author

Liu, Hongwu ; Li, Ji

Author_Institution

Sch. of Inf. Sci. & Technol., Southwest Jiaotong Univ., Chengdu

fYear

2006

fDate

38869

Firstpage

341

Lastpage

344

Abstract

The system employing space-frequency OFDM (SF-OFDM) transmitter diversity suffers enhanced co-channel interference (CCI) due to the use of multiple transmitters at each mobile. A beamforming for the cancellation of CCI in SF-OFDM system is proposed. The performance of the beamformer based on null-steering has been investigated. Simulation results show that the proposed method has a good CCI cancellation ability. Meanwhile, the system performance can be enhanced by using the time delays of the signals from different direction of arrivals (DOAs)

Keywords

OFDM modulation; array signal processing; cochannel interference; direction-of-arrival estimation; diversity reception; interference suppression; space-time codes; transmitters; CCI cancellation; DOA; cochannel interference; direction-of-arrival; null-steering beamformer; orthogonal frequency division multiplexing; space-frequency OFDM system; time delays; transmitter diversity; Adaptive arrays; Adaptive systems; Antenna arrays; Array signal processing; Delay effects; OFDM; Radiofrequency interference; Receiving antennas; Transmitters; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

ITS Telecommunications Proceedings, 2006 6th International Conference on

Conference_Location

Chengdu

Print_ISBN

0-7803-9587-5

Electronic_ISBN

0-7803-9587-5

Type

conf

DOI

10.1109/ITST.2006.288908

Filename

4068599