A new adaptive beamforming algorithm for WCDMA systems (uplink)

Ghamari Adian, M ; Sharif University of Technology | 2007

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  1. Type of Document: Article
  2. DOI: 10.1109/ICTMICC.2007.4448623
  3. Publisher: 2007
  4. Abstract:
  5. In the realization of adaptive beamforming algorithms, the least-mean-squares (LMS) algorithm had been the most popular scheme used for Smart Antenna systems. This Paper proposes an alternate scheme in the form of the Normalized LMS (NLMS) algorithm with active tap detection for WCDMA systems. By taking advantage of spatial filtering, the proposed scheme promises to reduce the bandwidth required for transmitting data by improving convergence rate. The performance of the Frequency Domain NLMS algorithm in the presence of multipath effects and multiple users is analyzed using simulations. This analysis is compared to that of LMS algorithm and suggests improvement in the convergence rate and number of active taps used, which leads to better system efficiency. ©2007 IEEE
  6. Keywords:
  7. Adaptive systems ; Algorithms ; Antenna accessories ; Beamforming ; Convergence of numerical methods ; Smart antennas ; Telecommunication systems ; Adaptive beamforming ; Adaptive beamforming algorithms ; Convergence rates ; Frequency domains ; International conferences ; LMS algorithm ; LMS algorithms ; Malaysia ; Multi-path effects ; Multiple users ; NLMS algorithms ; Smart antenna systems ; Spatial filtering ; System efficiencies ; Transmitting data ; Uplink communication ; WCDMA systems ; Adaptive algorithms
  8. Source: 2007 IEEE International Conference on Telecommunications and Malaysia International Conference on Communications, ICT-MICC 2007, Penang, 14 May 2007 through 17 May 2007 ; February , 2007 , Pages 145-149 ; 1424410940 (ISBN); 9781424410941 (ISBN)
  9. URL: https://ieeexplore.ieee.org/document/4448623