Title :
On spatial and temporal processing for CDMA overlay situations
Author :
Shah, A. ; Haimovich, A.M.
Author_Institution :
Dept. of Electr. & Comput. Eng., New Jersey Inst. of Technol., Newark, NJ, USA
Abstract :
Spatial and temporal processing are combined to suppress narrowband interference in CDMA communications. Space-time (ST) processing provides degrees of freedom (DOF) for both interference cancellation and diversity combining. Two ST receiver architectures, cascade and joint, are studied. The main contributions of the paper are the development of new analytical expressions of (1) the asymptotic efficiency of each method, (2) the probability density function (PDF) of the signal-to-interference-plus-noise ratio (SINR) at the array output in a frequency selective Rayleigh fading environment, and (3) the average probability of bit error (BER) associated with each method.
Keywords :
Rayleigh channels; cellular radio; code division multiple access; coding errors; diversity reception; error statistics; fading; interference suppression; land mobile radio; personal communication networks; probability; pseudonoise codes; radio receivers; radiofrequency interference; signal processing; spread spectrum communication; CDMA overlay; DS-CDMA; PDF; SINR; array output; asymptotic efficiency; average probability; bit error rate; cascade architecture; cellular band; degrees of freedom; diversity combining; frequency selective Rayleigh fading; interference cancellation; joint architecture; narrowband interference suppression; personal communication systems; probability density function; signal-to-interference-plus-noise ratio; space-time processing; space-time receiver; spatial processing; temporal processing; Diversity reception; Frequency; Interference cancellation; Interference suppression; Multiaccess communication; Narrowband; Probability density function; Rayleigh channels; Signal analysis; Signal to noise ratio;
Conference_Titel :
Signal Processing Advances in Wireless Communications, First IEEE Signal Processing Workshop on
Conference_Location :
Paris, France
Print_ISBN :
0-7803-3944-4
DOI :
10.1109/SPAWC.1997.630398
