Title :
Performance analysis for multi-channel assignment schemes in CDMA cellular systems
Author :
Wu, Jung-Shyr ; Chung, Jen-Kung ; Lee, Kung-Hwa
Author_Institution :
Nat. Central Univ., Chung-Li, Taiwan
Abstract :
The CDMA system promisingly provides more capacity than AMPS. However, providing multi-channels for a CDMA system is a requisite to satisfy the demand of capacity. Two schemes of multi-channel assignment are proposed. Based on the formulation of intra-cell interference and inter-cell interference, the capacity can be determined. The Markov chain approach is adopted to model the intra-cell-interference and inter-cell interference for the proposed channel assignment schemes. By solving the state probabilities, performance measures, e.g. blocking probabilities, the overall capacity and the capacity of each channel are obtained. Analytical results indicate that SIR-based selection scheme is preferable to the other
Keywords :
Markov processes; cellular radio; channel allocation; channel capacity; cochannel interference; code division multiple access; probability; AMPS; CDMA cellular systems; Markov chain; SIR-based selection; blocking probabilities; channel capacity; co-channel interference; inter-cell interference; intra-cell interference; multi-channel assignment; performance analysis; performance measures; state probabilities; Bandwidth; Capacity planning; Channel capacity; Direct-sequence code-division multiple access; Interchannel interference; Laboratories; Multiaccess communication; Performance analysis; Radio frequency; Radio spectrum management;
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.1998.726231