Impact and compensation of I / Q imbalance on channel reciprocity of time‐division‐duplexing multiple‐input multiple‐output systems
| Autor: | Kechu Yi, Zujun Liu, Dechun Sun, Jie-Ling Wang |
|---|---|
| Rok vydání: | 2013 |
| Předmět: |
business.industry
Computer science MIMO Duplex (telecommunications) Analog signal processing Topology Computer Science Applications Compensation (engineering) Channel capacity Time-division multiplexing Telecommunications link Bit error rate Electrical and Electronic Engineering Telecommunications business Communication channel |
| Zdroj: | IET Communications. 7:663-672 |
| ISSN: | 1751-8636 |
| DOI: | 10.1049/iet-com.2012.0620 |
| Popis: | Direct-conversion-based wireless communication systems suffer from I/Q imbalances in the front-end analog processing. In this study, the authors investigate the impact of frequency-independent (FI) I/Q imbalance on the channel reciprocity of time-division-duplexing (TDD) multiple-input multiple-output (MIMO) systems over frequency flat-fading channels. Moreover, in order to compensate the channel non-reciprocity caused by FI I/Q imbalance, the authors propose two pre-compensation algorithms with and without I/Q imbalance parameters. The performance of the TDD MIMO system under study is evaluated in terms of downlink capacity and bit-error rate. Simulation results show that the proposed algorithms can effectively mitigate the negative effect of FI I/Q imbalance on the channel reciprocity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text