Multiple Antenna Systems With Hardware Impairments: New Performance Limits

被引：30

作者：

Javed, Sidrah ^{[1
]}

Amin, Osama ^{[1
]}

Ikki, Salama S. ^{[2
]}

Alouini, Mohamed-Slim ^{[1
]}

机构：

[1] King Abdullah Univ Sci & Technol, Comp Elect & Math Sci & Engn Div, Thuwal 23955, Saudi Arabia

[2] Lakehead Univ, Dept Elect Engn, Fac Engn, Thunder Bay, ON P7B 5E1, Canada

来源：

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY | 2019年 / 68卷 / 02期

关键词：

Achievable rate; asymmetric signaling; hardware impairments; I/Q imbalance; improper Gaussian signaling; MIMO; multiple antenna; self-interference; I/Q IMBALANCE; TRANSCEIVER; CAPACITY;

D O I：

10.1109/TVT.2018.2888690

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

In this paper, we accurately model the impact of aggregate hardware impairments (HWIs) in communication systems as improper Gaussian signals (IGS), which can describe the asymmetric characteristics of different HWI sources. The proposed model encourages us to adopt the IGS scheme for transmission that represents a general signaling scheme compared with the conventional scheme, proper Gaussian signaling (PGS). First, we express the achievable rate of multiple-input and multiple-output system suffering from various HWIs employing PGS and IGS schemes, when the aggregate effect of HWI is modeled as IGS. Moreover, we tune the transmit IGS statistical characteristics to maximize the achievable rate for the HWI single-input and multiple-output system with two receiver combining schemes. Then, we propose an adaptive scheme to switch between maximal IGS and PGS schemes under certain conditions to improve the system performance with least computational/optimization overhead. Finally, we validate the analytic expressions through numerical and simulation results and quantify the gain reaped from adopting the IGS scheme compared with the PGS scheme.

引用

页码：1593 / 1606

页数：14

共 37 条

[11] I/Q-Imbalance Self-Interference Coordination [J].