Abstract
A linear group-wise successive interference canceller in a synchronous code-division multiple-access system (CDMA) is considered in this paper. The proposed hybrid detector that combines successive and parallel cancellation techniques makes use of advantages offered by the two techniques. The convergence of the hybrid interference cancellation (HIC) detector is guaranteed by an adjustable parameter that depends upon the largest eigenvalue of the system's transition matrix. Since the largest eigenvalue is difficult to estimate, an upper bound is necessary for successful convergence. For this reason, a new upper bound for the maximum eigenvalue of the system's transition matrix was developed. Moreover, a new ordering and grouping algorithm that results in a higher convergence speed is proposed. Simulation results show that a significant improvement in performance is obtained using this technique.
Original language | English |
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Pages (from-to) | 704-709 |
Number of pages | 6 |
Journal | IEEE Transactions on Vehicular Technology |
Volume | 55 |
Issue number | 2 |
DOIs | |
State | Published - Mar 2006 |
Bibliographical note
Funding Information:Manuscript received April 15, 2003; revised December 21, 2004, June 7, 2005, September 19, 2005, and September 22, 2005. This work was supported by King Fahd University of Petroleum and Minerals (KFUPM) and by King Abdul Aziz City of Science and Technology (KACST) under Project Number ARP 21-58. The review of this paper was coordinated by Prof. M. Juntti.
Keywords
- Code-division multiple-access (CDMA)
- Hybrid detectors
- Multiuser detection
- Successive interference cancellation
ASJC Scopus subject areas
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics