Joint Estimation of IQ Parameters and Channel Response for OFDM Systems

被引：0
作者：
Marey, M. [1 ]
Samir, M. [2 ]
Dobre, O. [1 ]
El-Shenawy, H. [2 ]
El-Henawy, A. [3 ]
机构：
[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada
[2] El Shorouk Acad, Fac Engn, Cairo, Egypt
[3] Ain Shams Univ, Fac Engn, Cairo, Egypt
来源：
2010 IEEE 72ND VEHICULAR TECHNOLOGY CONFERENCE FALL | 2010年
关键词：
CARRIER FREQUENCY OFFSET; COMPENSATION; IMBALANCE; TRANSMITTER; ALGORITHM;
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：
In this paper, we develop a new algorithm to jointly estimate the channel impulse response and in-phase-quadrature (IQ) imbalances for OFDM systems. The estimation algorithm is based on the expectation maximization (EM) algorithm, exploiting information from the pilot symbols and detected data symbols in a systematic fashion. To reduce the complexity of the estimation algorithm, a suboptimal scheme is also introduced. The results indicate that the proposed algorithms achieve a significant improvement in the bit error rate (BER) performance when compared with conventional data-aided algorithms.
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收藏
页数：5
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