Blind Channel Estimation Based on the Lloyd-Max Algorithm in Narrowband Fading Channels and Partial-Band Jamming

2012-07-01
Dizdar, Onur
Yılmaz, Ali Özgür
In wireless communications, knowledge of the channel coefficients is required for coherent demodulation. In this work, a blind channel estimation method based on the Lloyd-Max algorithm is proposed for single-tap fading channels. The algorithm estimates the constellation points for the received signal using the Lloyd-Max algorithm. The algorithm is investigated for frequency hopping systems with small hop durations and operating under partial-band jamming for both detecting the jammer and estimating the channel. The performance of the Lloyd-Max channel estimation algorithm is compared to the performance of pilot-based channel estimation algorithms and non-coherent demodulation and decoding. A special concatenated channel code is constructed to work with the proposed blind channel estimation due to the phase ambiguity in estimates.
IEEE TRANSACTIONS ON COMMUNICATIONS

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Citation Formats
O. Dizdar and A. Ö. Yılmaz, “Blind Channel Estimation Based on the Lloyd-Max Algorithm in Narrowband Fading Channels and Partial-Band Jamming,” IEEE TRANSACTIONS ON COMMUNICATIONS, pp. 1986–1995, 2012, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/37314.