Title :
Performance comparison of DS-BPSK and DS-QPSK CDMA systems
Author_Institution :
DSO Nat. Labs., Singapore
Abstract :
QPSK (quadrature phase shift keying) has been known to be a bandwidth efficient modulation format. The performances of DS-BPSK (direct sequence binary phase shift keying) and DS-QPSK (direct sequence quadrature phase shift keying) modulation formats in a CDMA (code division multiple access) environment are compared in this study to see if this efficiency is preserved under the above conditions. This comparison study includes the effects of bandpass filtering which is not found in current literature. Parameters of interest are the BER (bit error rate) and the capacity supported
Keywords :
band-pass filters; channel capacity; code division multiple access; error statistics; phase shift keying; quadrature phase shift keying; spread spectrum communication; BER; CDMA systems; DS-BPSK; DS-QPSK; bandpass filtering; bandwidth efficient modulation; bandwidth efficieny; bit error rate; capacity; code division multiple access; direct sequence binary phase shift keying; direct sequence quadrature phase shift keying; Additive white noise; Band pass filters; Bandwidth; Bit error rate; Frequency; Gaussian noise; Gold; Interference; Multiaccess communication; Signal to noise ratio;
Conference_Titel :
Spread Spectrum Techniques and Applications, 1998. Proceedings., 1998 IEEE 5th International Symposium on
Conference_Location :
Sun City
Print_ISBN :
0-7803-4281-X
DOI :
10.1109/ISSSTA.1998.722488
