Title :
Applications of blind channel estimation to HF communication
Author :
Zhang, Qi ; Bao, Jeffrey Q. ; Tong, Lang
Author_Institution :
Dept. of Electr. & Syst. Eng., Connecticut Univ., Storrs, CT, USA
Abstract :
We propose a new channel estimation and equalization scheme for time varying HF channels. Using a blind channel estimation (BCE) algorithm, the new approach estimates the channel impulse response directly without relying on the probe. Combined with the nonlinear data-directed estimator (NDDE), the new algorithm has two main advantages. First, it improves the transmission efficiency by eliminating part or even all the probe symbols. Second, it avoids the propagation of channel estimation error in conventional schemes. Simulation results are presented for the testing scenario of MIL-STD-188-11OA
Keywords :
adaptive equalisers; adaptive estimation; military communication; military standards; modems; parameter estimation; time-varying channels; transient response; HF communication; MIL-STD-188-11OA; blind channel estimation algorithm; channel equalization; channel estimation error; channel impulse response; data modems; nonlinear data-directed estimator; probe symbols; simulation results; time varying HF channels; transmission efficiency; Blind equalizers; Channel estimation; Contracts; Data structures; Equations; Filters; Hafnium; Modems; Noise figure; Probes;
Conference_Titel :
MILCOM 97 Proceedings
Conference_Location :
Monterey, CA
Print_ISBN :
0-7803-4249-6
DOI :
10.1109/MILCOM.1997.644865
