23 July 2003 Structured channel estimation algorithm based on estimating the time-of-arrivals (TOAs), with applications to digital TV receivers
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Abstract
In this paper we introduce a new structured channel impulse response (CIR) estimation method for sparse multipath channels. We call this novel CIR estimation method Time-Of-Arrival based Blended Least Squares (TOA-BLS) which uses symbol rate sampled signals, based on blending the least squares based channel estimation and the correlation and cleaning followed by TOA estimation. TOA estimation is accomplished in the frequency domain and is based on AR model parameter estimation via unconstrained least squares. Simulation examples are drawn from the ATSC digital TV 8-VSB system. The delay spread for digital TV systemscan be as long as several hundred times the symbol duration; however digital TV channels are, in general, sparse where there are only a few dominant multipaths.
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Serdar Ozen, Serdar Ozen, Michael D. Zoltowski, Michael D. Zoltowski, } "Structured channel estimation algorithm based on estimating the time-of-arrivals (TOAs), with applications to digital TV receivers", Proc. SPIE 5100, Digital Wireless Communications V, (23 July 2003); doi: 10.1117/12.488727; https://doi.org/10.1117/12.488727
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