Self-Interference Channel Characteristics of a 2x2 MIMO Full-Duplex Transceiver

Fei Chen, R. Morawski, T. Le-Ngoc
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引用次数: 4

Abstract

This paper investigates the wideband self-interference (SI) channel characteristics for a 2x2 MIMO full-duplex (FD) transceiver with dual-polarized antennas. The measurements, carried out at 2.45GHz with 500MHz span in various environments: anechoic chamber, laboratory- room, and corridor, show that the SI-channel can be represented by a multipath model consisting of two segments: a quasistatic internal SI-sub-channel due to the specific Tx/Rx antenna structure and a time-varying or dynamic external SI-sub-channel due to possible reflections from the surrounding environment. The quasi-static internal SI-sub-channel parameters can be derived from the Tx/Rx antenna structure specifications. The dynamic external SI-channel exhibits cluster reflection arrival features and can be modeled by a modified Saleh-Valenzuela (S-V) model, and the cluster power decays exponentially with cluster arrival delay. However, the path power-versus-arrival delay decay is exponential in a laboratory-room environment while it follows the power law in a corridor environment.
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2x2 MIMO全双工收发器的自干扰信道特性
研究了一种具有双极化天线的2x2 MIMO全双工(FD)收发器的宽带自干扰信道特性。在各种环境(暗室、实验室室和走廊)中,在2.45GHz和500MHz范围内进行的测量表明,si通道可以由由两部分组成的多径模型表示:由于特定的Tx/Rx天线结构而产生的准静态内部si子通道和由于周围环境可能反射而产生的时变或动态外部si子通道。准静态内部si子通道参数可以从Tx/Rx天线结构规格中导出。动态外部si通道具有簇反射到达特征,可以用改进的Saleh-Valenzuela (S-V)模型来建模,簇功率随簇到达延迟呈指数衰减。然而,在实验室环境中,路径功率与到达延迟的衰减是指数的,而在走廊环境中,它遵循幂律。
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