Sequential Compensation of RF Impairments in OFDM Systems

被引：0
|
作者：
Gregorio, Fernando [1 ]
Cousseau, Juan [1 ]
Werner, Stefan [2 ]
Wichman, Risto [2 ]
Riihonen, Taneli [2 ]
机构：
[1] Univ Nacl Sur, IIIE CONICET, RA-1253 Bahia Blanca, Buenos Aires, Argentina
[2] Aalto Univ, FI-02015 Espoo, Finland
来源：
2010 IEEE WIRELESS COMMUNICATIONS AND NETWORKING CONFERENCE (WCNC 2010) | 2010年
关键词：
RF impairments; baseband DSP compensation method; PHASE NOISE; FREQUENCY OFFSET; IQ IMBALANCE; DISTORTION;
D O I：
暂无
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：
Direct-conversion OFDM transceivers are seriously affected by front-end distortions like IQ imbalance and phase noise. Moreover, OFDM systems are sensitive to nonlinear distortions in power amplifiers and A/D converters, and to carrier frequency offset (CFO). We present a novel baseband compensation technique that compensates these main impairments in OFDM systems. Unlike compensation scheme that target a subset of impairments, our method jointly mitigates the effects of IQ imbalance, phase noise, carrier frequency offset and nonlinear distortion. Simulations of the proposed scheme with large levels of CFO, IQ imbalance and phase noise show an excellent performance in terms of bit error rate.
引用
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页数：6
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