Blind Fractionally Spaced Equalization and Timing Synchronization in Wireless Fading Channels
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Nasir, Ali
Kennedy, Rodney
Durrani, Salman
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Institute of Electrical and Electronics Engineers (IEEE Inc)
Abstract
The development of low-complexity blind techniques for equalization and timing synchronization is of enormous importance in the design of wireless communication systems. In this paper, we propose a practical solution for blind equalization and timing recovery in fast-fading time and frequency selective wireless communication channels. We develop a general framework for Constant Modulus Algorithm (CMA) based joint Fractionally Spaced Equalization (FSE) and timing recovery. We use differential modulation to deal with any arbitrary carrier offset. We propose a data reuse strategy to achieve improved short burst wireless communication in CMA based equalization systems. Our results show that FSE outperforms T-Spaced Equalization (TSE) with approximately 2 times faster Mean Square Error (MSE) convergence and approximately 2 dB gain in Bit Error Rate (BER) performance in wireless fading channels. In addition, we demonstrate that the BER performance of the proposed FSE receiver meets the theoretical bounds with only a few dB loss in Stanford University Interim (SUI) channels, which are relevant to IEEE 802.16.3c standard for Wireless Metropolitan Area Networks.
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Keywords: BER performance; Bit error rate performance; Blind technique; Carrier offset; Constant modulus algorithms; Data reuse; Differential modulation; Frequency-selective; Low-complexity; Practical solutions; Short bursts; Stanford University; Theoretical bounds
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Proceedings of International Conference on Future Computer and Communication (ICFCC 2010)
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Conference paper
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International Conference on Future Computer and Communication (ICFCC 2010)
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2037-12-31
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