A new approach to reduce multi-access interference in DS-CDMA

  • Authors:

  • Emran Mohammad Abu Anas;Atahar Kamal Mostafa

  • Affiliations:

  • Electrical and Electronic Engineering Department, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh;Electrical and Electronic Engineering Department, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh

  • Venue:
  • ICUFN'09 Proceedings of the first international conference on Ubiquitous and future networks
  • Year:
  • 2009

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Abstract

Direct Sequence Code Division Multiple Access (DSCDMA) is mainly an interference limited channel. When several users are accessed in a common channel and since signature sequences assigned to users are not perfectly orthogonal, so interference is introduced in each user's desired signal. Several interference cancellation methods were proposed to reduce multiaccess interference. In this paper, we propose a new method in which a correlation matrix is calculated and then performs some procedures to reduce this interference. To reduce this interference further, multistage scheme can be introduced. We also deal with memory allocation mapping to support this whole interference reduction method.