Title :
Joint channel and symbol estimation by oblique projections
Author :
Yu, Xiang ; Tong, Lang
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA
fDate :
12/1/2001 12:00:00 AM
Abstract :
The problem of simultaneous blind channel and symbol estimation of a single-input multiple-output (SIMO) communication channel is considered. It is shown that the outer product of the channel vector and the channel input sequence can be obtained by a linear estimator that has the finite sample convergence property. Furthermore, this estimator can be obtained by the use of oblique projections. An order detection algorithm that avoids the use of subjective thresholding is also proposed. Applications to multiuser detection are also considered
Keywords :
interference suppression; intersymbol interference; least squares approximations; multipath channels; parameter estimation; signal detection; telecommunication channels; ISI removal; SIMO communication channel; blind channel identification; blind symbol estimation; channel input sequence; channel vector; finite sample convergence; intersymbol interference; joint channel estimation; linear estimator; multipath channels; multiuser detection; noisy environment; order detection algorithm; outer product; single-input multiple-output channel; subjective thresholding; symbol estimation; total least squares oblique projection; Communication channels; Convergence; Detection algorithms; Iterative algorithms; Least squares approximation; Least squares methods; Multiaccess communication; Power capacitors; Smoothing methods; Vectors;
Journal_Title :
Signal Processing, IEEE Transactions on
