Title :
A fast sequential source separation algorithm for digital cochannel signals
Author :
Hansen, Lars K. ; Xu, Guanghan
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas Univ., Austin, TX, USA
Abstract :
We propose a fast sequential-estimation algorithm for separating multiple cochannel digital signals using an antenna array with unknown array response. We present simulation results comparing speed and bit error rate (BER) performance with an existing fast joint-estimation algorithm, the iterative least squares with projection (ILSP) algorithm. The new algorithm proves to be faster with only a modest degradation in BER. In addition, convergence speed is very robust with respect to additive noise.
Keywords :
Gaussian noise; antenna arrays; array signal processing; convergence of numerical methods; digital signals; error statistics; matrix algebra; phase shift keying; sequential estimation; telecommunication channels; BER performance; BPSK signals; additive noise; antenna array; binary phase shift keying; bit error rate; convergence speed; digital cochannel signals; fast sequential source separation algorithm; hypercube algorithm; iterative least squares with projection algorithm; sequential-estimation algorithm; unknown array response; Additive noise; Antenna arrays; Binary phase shift keying; Bit error rate; Eigenvalues and eigenfunctions; Gaussian noise; Hypercubes; Iterative algorithms; Noise robustness; Source separation;
Journal_Title :
Signal Processing Letters, IEEE
