Co-channel interference cancellation technique using orthogonal convolutional codes

Yukitoshi Sanada, Qiang Wang

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

This paper proposes a new co-channel interference cancellation technique which utilizes orthogonal convolutional codes. For spread spectrum multiple access, co-channel interference (CCI) limits the performance of a communication link. To remove this interference, several CCI cancellation techniques have been proposed. Especially techniques which do not require the receiver to have knowledge of the cross-correlation between user sequences have been presented. However, these methods leave residual interference after the cancellation caused by errors on the initial decision. To reduce the residual interference and improve the initial decision, the proposed scheme utilizes the error correcting capability of the orthogonal convolutional code. This paper evaluates the performance of this scheme. It is shown that up to about 40 users, the proposed CCI canceler has a performance which is near the optimum performance when multiuser interference is completely canceled. It is also shown that the proposed CCI canceller offers an improvement in capacity by a factor of 1.5 approx. 3 as compared with a conventional canceller.

Original languageEnglish
Pages176-180
Number of pages5
Publication statusPublished - 1994 Dec 1
Externally publishedYes
EventProceedings of the 1994 IEEE 3rd International Symposium on Spread Spectrum Techniques & Applications. Part 2 (of 2) - Oulu, Finl
Duration: 1994 Jul 41994 Jul 6

Other

OtherProceedings of the 1994 IEEE 3rd International Symposium on Spread Spectrum Techniques & Applications. Part 2 (of 2)
CityOulu, Finl
Period94/7/494/7/6

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ASJC Scopus subject areas

  • Engineering(all)

Cite this

Sanada, Y., & Wang, Q. (1994). Co-channel interference cancellation technique using orthogonal convolutional codes. 176-180. Paper presented at Proceedings of the 1994 IEEE 3rd International Symposium on Spread Spectrum Techniques & Applications. Part 2 (of 2), Oulu, Finl, .