A Novel Cost-Effective MIMO Architecture with Ray Antenna Array for Enhanced Wireless Communication Performance
Zhenjun Dong, Zhiwen Zhou, and Yong Zeng

TL;DR
This paper introduces a cost-effective MIMO architecture called ray antenna array (RAA) that enhances wireless communication performance through flexible beamforming and finer angular resolution without expensive phase shifters.
Contribution
The paper presents the novel RAA architecture, combining inexpensive antenna elements with a ray-like structure and a ray selection network, reducing hardware costs while improving beamforming capabilities.
Findings
RAA achieves superior performance compared to traditional ULA with hybrid beamforming.
RAA provides finer angular resolution and enhanced beamforming gain.
Hardware cost is significantly reduced by eliminating phase shifters.
Abstract
This paper proposes a novel multi-antenna architecture, termed ray antenna array (RAA), which practically enables flexible beamforming and also enhances wireless communication performance for high frequency systems in a cost-effective manner. RAA consists of a large number of inexpensive antenna elements and a few radio frequency (RF) chains. These antenna elements are arranged in a novel ray like structure, where each ray corresponds to one simple uniform linear array (sULA) with a carefully designed orientation. The antenna elements within each sULA are directly connected, so that each sULA is able to form a beam towards a direction matching the ray orientation without relying on any analog or digital beamforming. By further designing a ray selection network (RSN), appropriate sULAs are selected to connect to the RF chains for subsequent baseband processing. Compared to conventional…
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Taxonomy
TopicsMillimeter-Wave Propagation and Modeling · Antenna Design and Analysis · Antenna Design and Optimization
