Title :
Using multi-level QAM modulation in CDMA system
Author :
Wei, Yongbin ; Tiedemann, Edward G., Jr. ; Ling, Fuyun ; Sarkar, Sandip
Author_Institution :
Qualcomm Inc., San Diego, CA, USA
Abstract :
To facilitate the design of packet data transmission in CDMA systems using rate adaptation, an expression is developed based on the channel capacity result that can be used to compute the maximum supportable rate for a given channel condition and available system resources. This provides an alternative approach to choose the code rate and modulation more efficiently than simulations. Numerical examples and simulation are included to elaborate the result
Keywords :
cellular radio; channel capacity; code division multiple access; packet radio networks; quadrature amplitude modulation; CDMA system; available system resources; channel capacity; channel condition; code rate; maximum supportable rate; modulation; multi-level QAM; packet data transmission; rate adaptation; AWGN; Channel capacity; Computational modeling; Data communication; Frequency; Modulation coding; Multiaccess communication; Numerical simulation; Quadrature amplitude modulation; Telephony;
Conference_Titel :
Vehicular Technology Conference, 2001. VTC 2001 Spring. IEEE VTS 53rd
Conference_Location :
Rhodes
Print_ISBN :
0-7803-6728-6
DOI :
10.1109/VETECS.2001.944920
