Title :
Frequency offset compensated RLS-MLSE for TDMA systems in frequency selective Rayleigh fading channels
Author :
Jeong, Eui Rim ; Lee, Yong Hoon
Author_Institution :
Dept. of Electr. Eng., Korea Adv. Inst. of Sci. & Technol., Seoul, South Korea
Abstract :
A new baseband signal processing method for estimating frequency offset in coherent demodulation of PSK and QAM signals, transmitted over frequency selective fading channels is introduced. This method estimates frequency offset from the intersymbol interference (ISI) caused by the fading channel as well as from the information symbol. Its structure resembles that of RAKE receivers for CDMA receivers, and thus it is called the RAKE frequency estimator. Computer simulation results demonstrate that the RAKE frequency estimator can perform much better than existing methods in frequency selective fading channels
Keywords :
Rayleigh channels; code division multiple access; compensation; demodulation; frequency estimation; intersymbol interference; land mobile radio; least squares approximations; maximum likelihood sequence estimation; phase shift keying; quadrature amplitude modulation; radio receivers; recursive estimation; signal processing; time division multiple access; ISI; PSK; QAM; RAKE frequency estimator; RAKE receivers; TDMA systems; baseband signal processing method; coherent demodulation; frequency offset compensated RLS-MLSE; frequency selective Rayleigh fading channels; frequency selective fading channels; information symbol; intersymbol interference; Baseband; Demodulation; Fading; Frequency estimation; Intersymbol interference; Multipath channels; Phase shift keying; Quadrature amplitude modulation; Signal processing; Time division multiple access;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.686173
