Title :
Capacity enhancement of DS-CDMA cellular systems with asymmetrical bandwidth allocation
Author :
Cheah, K.L. ; Li, K.H.
Author_Institution :
Sch. of Electr. & Electron. Eng., Nanyang Technol. Inst., Singapore
Abstract :
Asymmetrical allocation of bandwidth to the forward and reverse channels based on the link quality is proposed. A 9-cell configuration is assumed to account for both inter and intracell interference. The optimum bandwidth allocation is easily obtained from the performance curves of both links. This design consideration is particularly effective if there is notable difference between the quality of the forward and reverse links. Our studies indicate that a 40% capacity gain is possible in a generic cellular CDMA system
Keywords :
cellular radio; channel capacity; code division multiple access; land mobile radio; pseudonoise codes; radio links; radiofrequency interference; spread spectrum communication; 9-cell configuration; DS-CDMA cellular systems; asymmetrical bandwidth allocation; capacity enhancement; capacity gain; forward channels; generic cellular CDMA system; intercell interference; intracell interference; link quality; optimum bandwidth allocation; performance curves; reverse channels; Bandwidth; Channel allocation; Fading; Frequency; Gaussian approximation; Interference; Legislation; Multiaccess communication; Neural networks; Power control;
Conference_Titel :
Spread Spectrum Techniques and Applications Proceedings, 1996., IEEE 4th International Symposium on
Conference_Location :
Mainz
Print_ISBN :
0-7803-3567-8
DOI :
10.1109/ISSSTA.1996.563176
