Optimizing Antenna Coding for Pixel Antenna Empowered SISO-OFDM Systems

TL;DR

This paper presents an optimization framework for antenna coding in pixel antenna empowered SISO-OFDM systems, significantly improving channel capacity through joint coding and power allocation strategies.

Contribution

It introduces a novel antenna coding optimization method using SEBO and water-filling, along with a codebook-based approach to reduce computational complexity.

Findings

Enhanced channel capacity across all SNR regions

Pixel antenna coding outperforms fixed configuration antennas

Proposed methods are effective and computationally feasible

Abstract

This work investigates antenna coding optimization to enhance the channel capacity of single-input single-output orthogonal frequency division multiplexing (SISO-OFDM) systems empowered by highly reconfigurable pixel antennas. We first introduce the model for pixel antenna empowered SISO-OFDM systems using a beamspace channel representation. We next formulate the problem to maximize the channel capacity through jointly optimizing antenna coding and the power allocation across subcarriers and solve it by Successive Exhaustive Boolean Optimization (SEBO) and water-filling (WF) algorithm. To reduce computational complexity, a codebook-based approach is also proposed for antenna coding optimization. Simulation results show that the channel capacity of SISO-OFDM system across all signal-to-noise-ratio (SNR) regions considered can be enhanced through leveraging pixel antennas as compared to using conventional antenna with fixed configuration. This result demonstrates the effectiveness of antenna coding technology empowered by pixel antenna in enhancing SISO-OFDM systems.