An efficient multipath detection scheme for CDMA systems

Mohamed Abou-Khousa, Ali Ghrayeb, Mohamed El-Tarhuni

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

In conventional CDMA receivers, the detection of multipath components and RAKE finger management is normally based on the received signal energy per path. These schemes essentially overlook the interference component contaminating the total received power. Consequently, they exhibit poor multipath detection capability especially at low signal-to-interference-plus-noise ratio (SINR). In this paper, we present a new scheme for multipath detection that takes into consideration the interference level in each resolved path individually. Specifically, the proposed scheme is devised to estimate and cancel the interference per path before detection. To account for the hardware limitations of the receiver, we propose a low complexity version of the above scheme which can be easily incorporated into the receiver structure. Our results show that the proposed scheme provides significant improvements in the detection probability of multipath components over the energy-based schemes.

Original languageEnglish
Pages (from-to)2776-2781
Number of pages6
JournalIEEE Transactions on Wireless Communications
Volume6
Issue number8
DOIs
Publication statusPublished - Aug 2007
Externally publishedYes

Fingerprint

Code Division multiple Access
Multipath
Code division multiple access
Hardware
Interference
Receiver
Path
Probability of Detection
Cancel
Energy
Low Complexity
Estimate

Keywords

  • CDMA
  • Multipath detection
  • Signal-to-interference ratio

ASJC Scopus subject areas

  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

An efficient multipath detection scheme for CDMA systems. / Abou-Khousa, Mohamed; Ghrayeb, Ali; El-Tarhuni, Mohamed.

In: IEEE Transactions on Wireless Communications, Vol. 6, No. 8, 08.2007, p. 2776-2781.

Research output: Contribution to journalArticle

Abou-Khousa, Mohamed ; Ghrayeb, Ali ; El-Tarhuni, Mohamed. / An efficient multipath detection scheme for CDMA systems. In: IEEE Transactions on Wireless Communications. 2007 ; Vol. 6, No. 8. pp. 2776-2781.
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