Title :
Performance characteristics of the IS-95 standard for CDMA spread spectrum mobile communication systems
Author :
Raveendran, Vijayalakshmi R. ; Doherty, John F.
Author_Institution :
Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA
Abstract :
An IS-95 based mobile communication system is simulated and its performance characteristics in multipath fading environment is presented in this paper. A new software simulation methodology to implement the system using the dynamic system simulation environment, SIMULINK(R) in MATLAB(R) is also developed. The system consists of forward and reverse CDMA channel structures in the forward link (base station to mobile station) and reverse link (mobile station to base station) respectively. A three-stage measurement based multipath channel model consisting of path loss, lognormal fading and Rayleigh fading components is implemented. Channel impulse response measurements, also described as power delay profiles, of RF signals in the range of 800-900 MHz in multipath channels are used to estimate the structure of an optimum noncoherent combining RAKE receiver. This receiver shows considerable performance improvement over a four-way combining RAKE receiver
Keywords :
Rayleigh channels; code division multiple access; digital radio; digital simulation; fading; land mobile radio; multipath channels; spread spectrum communication; telecommunication computing; telecommunication standards; BER; CDMA spread spectrum systems; Channel impulse response measurements; IS-95 standard; MATLAB; RF signals; Rayleigh fading; SIMULINK; dynamic system simulation environment; forward CDMA channel structures; lognormal fading; mobile communication systems; multipath channel model; multipath fading environment; optimum noncoherent combining RAKE receiver; path loss; performance characteristics; power delay profiles; reverse CDMA channel structures; software simulation methodology; Base stations; Computer languages; Delay estimation; Fading; Loss measurement; Mathematical model; Mobile communication; Multiaccess communication; Multipath channels; Rayleigh channels;
Conference_Titel :
Circuits and Systems, 1996., IEEE 39th Midwest symposium on
Conference_Location :
Ames, IA
Print_ISBN :
0-7803-3636-4
DOI :
10.1109/MWSCAS.1996.587866
