Title :
Blind parameter estimation of circular transmissions in multiple-access systems
Author :
Napolitano, Antonio ; Tanda, M.
Author_Institution :
Dipt. di Ingegneria Elettronica e delle Telecomunicazioni, Universita di Napoli Federico II, Italy
Abstract :
The problem of blind parameter estimation of circular transmissions in multiple-access systems is addressed. A non-data aided algorithm based on the higher-order cyclostationarity features of the received signal is proposed to estimate amplitude, phase, time delay, and frequency shift of each user. Furthermore, a reduced complexity algorithm is proposed to avoid the burden arising from the higher-order cyclic statistic estimation. Simulation results are presented to show the effectiveness of the proposed algorithm to properly operate in severe noise and interference environments.
Keywords :
amplitude estimation; delay estimation; frequency estimation; multi-access systems; phase estimation; radiofrequency interference; amplitude estimation; blind parameter estimation; circular transmissions; frequency shift; higher-order cyclic statistic estimation; higher-order cyclostationarity features; interference environments; multiple-access systems; nondata aided algorithm; phase estimation; reduced complexity algorithm; severe noise environments; time delay; Amplitude estimation; Delay effects; Delay estimation; Frequency estimation; Interference; Parameter estimation; Phase estimation; Statistics; White noise; Working environment noise;
Conference_Titel :
Signal Processing Advances in Wireless Communications, 2003. SPAWC 2003. 4th IEEE Workshop on
Print_ISBN :
0-7803-7858-X
DOI :
10.1109/SPAWC.2003.1318924
