Title :
Modulation and processing gain tradeoffs in DS-CDMA spread spectrum systems
Author :
Asano, David K. ; Hayashi, Tatsuji ; Kohno, Ryuji
Author_Institution :
Dept. of Inf. Eng., Shinshu Univ., Nagano, Japan
Abstract :
Continuous phase modulation (CPM) schemes are examined for use in DS-CDMA spread spectrum systems. Since the power spectra of CPM schemes are narrower than BPSK schemes, a larger processing gain can be used for the same overall bandwidth after spreading. The processing gain, relative to BPSK, that can be used with CPM is calculated. As an example, it is shown that the performance of an MSK system is better than a BPSK system for an equivalent overall bandwidth
Keywords :
code division multiple access; continuous phase modulation; minimum shift keying; phase shift keying; spread spectrum communication; BER; BPSK; CPM; DS-CDMA spread spectrum systems; MSK system; continuous phase modulation; modulation; performance; power spectra; processing gain; Bandwidth; Binary phase shift keying; Continuous phase modulation; Modulation coding; Multiaccess communication; Phase modulation; Power engineering and energy; Power engineering computing; Signal processing; Spread spectrum communication;
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.1998.726185
