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

Date

2012-07-01

Author

Dizdar, Onur
Yılmaz, Ali Özgür

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

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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.

Subject Keywords

Blind channel estimation, Jammer detection, Jamming, Narrowband, Lloyd-Max, Fading

URI

https://hdl.handle.net/11511/37314

Journal

IEEE TRANSACTIONS ON COMMUNICATIONS

DOI

https://doi.org/10.1109/tcomm.2012.051712.110523

Collections

Department of Electrical and Electronics Engineering, Article

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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.