Study of Distributed Robust Beamforming with Low-Rank and Cross-Correlation Techniques

H. Ruan; R. C. de Lamare

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arXiv · 1912.01506

Study of Distributed Robust Beamforming with Low-Rank and Cross-Correlation Techniques

H. Ruan·R. C. de Lamare

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Abstract

In this work, we present a novel robust distributed beamforming (RDB) approach based on low-rank and cross-correlation techniques. The proposed RDB approach mitigates the effects of channel errors in wireless networks equipped with relays based on the exploitation of the cross-correlation between the received data from the relays at the destination and the system output and low-rank techniques. The relay nodes are equipped with an amplify-and-forward (AF) protocol and the channel errors are modeled using an additive matrix perturbation, which results in degradation of the system performance. The proposed method, denoted low-rank and cross-correlation RDB (LRCC-RDB), considers a total relay transmit power constraint in the system and the goal of maximizing the output signal-to-interference-plus-noise ratio (SINR). We carry out a performance analysis of the proposed LRCC-RDB technique along with a computational complexity study. The proposed LRCC-RDB does not require any costly online optimization procedure and simulations show an excellent performance as compared to previously reported algorithms.

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H. Ruan, R. C. de Lamare. 2019-11-27. Study of Distributed Robust Beamforming with Low-Rank and Cross-Correlation Techniques. https://arxiv.org/abs/1912.01506

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