Study on Performance of Coded OFDM-CDM under Unknown Interference

Author

Liu Wei ; Zhang, Chun-Yang ; Fu, Jiang-Tao

Author_Institution

Sch. of Electr. Inf. Eng., Henan Univ. of Sci. & Technol., Luoyang, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

A detection method of convolutionally coded orthogonal frequency division multiplexing coded division multiplexing communication system with non-Gaussian interference is studied. The frequency spreading through subcarriers can obtain frequency diversity and whiten the non-Gaussian unknown interference in OFDM-CDM system. The impact of whitened non-Gaussian noise on OFDM-CDM is similar to Gaussian interference and can be detected by parallel interference cancellation. The parallel interference cancellation performs better than minimum mean square error equalization. The results show that the parallel interference cancellation is also efficient in coded OFDM-CDM with unknown non-Gaussian interference.

Keywords

OFDM modulation; code division multiplexing; interference suppression; OFDM-CDM system; coded division multiplexing communication system; convolutionally coded orthogonal frequency division multiplexing; frequency diversity; nonGaussian interference; parallel interference cancellation; Additive white noise; Convolution; Convolutional codes; Equalizers; Frequency diversity; Interference cancellation; Mean square error methods; OFDM; Signal detection; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5302253

Filename

5302253