RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems

doi:1005-8885 (2007) 02-0089-05

中国邮电高校学报(英文) ›› 2007, Vol. 14 ›› Issue (2): 89-93.doi: 1005-8885 (2007) 02-0089-05

RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems

李亚卓;张平

Beijing University of Posts and Telecommunications

收稿日期:2006-11-26 修回日期:1900-01-01 出版日期:2007-06-30

RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems

LI Ya-zhuo; Zhou Ming-yu;ZHANG Ping

Beijing University of Posts and Telecommunications

Received:2006-11-26 Revised:1900-01-01 Online:2007-06-30

摘要/Abstract

摘要：

Radio frequency (RF) front-end nonidealities in multi-input and multi-output (MIMO) systems are more serious than in single-input and single-output systems and must be calibrated. According to the effects of RF power and in-phase/quadrature-phase (I/Q) imbalance, calibration methods for multi-input and multi-outputorthogonal frequency division multiplexing (MIMC-OFDM) systems in transmitter and interference in receiver are improved, respectively, in this article. Furthermore, a calibration scheme including I/Q imbalance errors and amplitude variations is proposed and implemented in the B3G/4G time division duplex communication system. Simulation results show that the calibration algorithms are feasible, and the bit error rate (BER) performances for MIMO-OFDM systems are improved after calibrations.

关键词:

calibration;B3G/4G; MIMO-OFDM; front-end; I/Q imbalance

Abstract:

Key words:

calibration; B3G/4G; MIMO-OFDM;front-end;I/Q imbalance

中图分类号:

LI Ya-zhuo

LI Ya-zhuo; Zhou Ming-yu;ZHANG Ping. RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems[J]. Acta Metallurgica Sinica(English letters), 2007, 14(2): 89-93.

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RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems

RF power and I/Q imbalance calibration in B3G/4G MIMO-OFDM systems

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