Joint power control and blind beamforming over wireless networks: A cross layer approach
type: Item
instance of: scholarly article
title: Joint power control and blind beamforming over wireless networks: A cross layer approach
zbMATH Open document ID: 1068.94514
DOI: 10.1155/S1110865704311030
author: Zhu Han
author: Farrokh R. Farrokhi
author: K. J. Ray Liu
published in: EURASIP Journal on Applied Signal Processing
publication date: 2005-05-03T00:00:00Z
review text: Summary: Traditional joint power control and beamforming achieve the targeted signal-to-interference-noise ratio (SINR) at the receivers by assuming the knowledge of the measurements of channel parameters and SINR. Blind beamforming is an effective technique for beamforming and channel estimation without the need of training sequences, thus not consuming extra bandwidth. In this paper, we propose a novel joint power control and blind beamforming algorithm that reformulates the power control problem in such a way that it does not need any prior knowledge and additional measurements in the physical layer. In contrast to the traditional schemes that optimize SINR and, as a result, minimize bit error rate (BER), our proposed algorithm achieves the desired BER by adjusting a quantity available from blind beamforming. By sending this quantity to the transmitter through a feedback channel, the transmit power is iteratively updated in a distributed manner in the wireless networks with cochannel interferences (CCIS). Our proposed algorithm is more robust to estimation errors. We have shown in both analysis and simulation that our algorithm converges to the desired solution. In addition, a Cramér-Rao lower bound (CRB) is derived to compare with the performance of our proposed joint power control and blind beamforming system.
Mathematics Subject Classification ID: 94A12
Mathematics Subject Classification ID: 94A05
zbMATH DE Number: 2163840
MaRDI profile type: Publication
full work available at URL: s1110865704311030
OpenAlex ID: W2116530026
description: scientific article; zbMATH DE number 2163840