QRD-RLS Adaptive Filter Based Antenna Beamforming for OFDM Systems

 Naveen Rathi* and Sanjay Sharma**

Abstract:

This paper presents a technique for the antenna beamforming in high data rate OFDM systems. The technique makes use of the QR decomposition-based recursive least squares (RLS) algorithm using Givens Rotation. The simulation results are obtained for the Qr factorization and QRD-RLS algorithm both for the floating-point as well as the fixed-point models. An overall architecture is created in Matlab for four sensor elements and is then simulated. The techniques used clearly indicate the improvement in the response of the system. The VHDL code is then written to describe the architecture of the overall design and is then synthesized using Xilinx ISE 10.1 software for Virtex-4 target device.

Keywords: QRD-RLS , Adaptive Filters, Antenna Beamforming, OFDM Systems

(P1170842401 804 KB)

@ARTICLE{P1170842401,

AUTHOR = { Naveen Rathi and Sanjay Sharma},

TITLE = {QRD-RLS Adaptive Filter Based Antenna Beamforming for OFDM Systems},

}

(P1170842401 804 KB)