A robust receiver structure for time-varying, frequency-flat, Rayleigh fading channels

Equalization of Time-Varying Channels

“…For example, trellis-based PSP algorithms for joint estimation of symbols and polynomial BEM [BH99a] coefficients were proposed, for time-selective channels, by Borah and Hart [BH99c] and Leon and Taylor [LT03]. DFE and trellis methods for both polynomial and Karhunen-Loève BEMs [BH99b] were studied by Borah and Hart in [BH99b] for doubly selective channels.…”

Model-based channel estimation framework for MIMO multicarrier communication systems

“…Substituting into (8), we get the estimation of the channel as (15) . In this estimation algorithm, and can be calculated off-line once the model and training sequence are determined.…”

“…In this case, the model basis is (12) for and . The channel estimation algorithms in [15]- [18] and [25] are examples of using this model in the single antenna system.…”

“…One way to exploit the correlation is to model the channel responses by some efficient channel models and estimate a much smaller set of model coefficients instead of the large number of channel responses. The most popular finite impulse response (FIR) filter channel model is used in [7], [8], [10], [11], and [14], while the authors in [15]- [18] use the the other type of model, namely the polynomial model.…”

“…Based on the analysis, the training sequence design and model selection are discussed. Finally, we use two types of models, the Fourier-transform-based model [6], [12] and the polynomial model in [15] and [17] as examples to demonstrate the performance of the channel estimation schemes in computer simulations. Fig.…”