Title :
Increasing the CDMA reverse link voice-data capacity using a per rate class interference method with optimal spatial combining
Author :
Burke, Joseph P. ; Zeidler, James R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of California, San Diego, CA, USA
fDate :
6/24/1905 12:00:00 AM
Abstract :
The voice Erlang capacity is analyzed in a multi-antenna combined voice-data CDMA reverse link (RL). The influence of two different spatial combining techniques: optimal combining (OC) and maximal ratio combining (MRC) on the voice Erlangs is evaluated when a single scheduled high data rate (HDR) data channel is shared by users desiring HDR services. The impact of randomly arriving data users on the voice Erlangs is also analyzed. A per rate class rise over thermal metric is defined and used with OC spatial combining. At large HDR values, increases in the voice Erlangs are illustrated when using OC vs. MRC.
Keywords :
Rayleigh channels; antenna arrays; channel capacity; code division multiple access; diversity reception; integrated voice/data communication; land mobile radio; multiuser channels; radio links; radiofrequency interference; CDMA reverse link voice-data capacity; HDR services; antenna array; flat Rayleigh fading channel model; high data rate data channel; maximal ratio combining; multi-antenna combined voice-data link; optimal spatial combining; per rate class interference method; randomly arriving data users; thermal metric; voice Erlang capacity; Adaptive arrays; Clustering algorithms; Diversity reception; Fading; Interference suppression; Multiaccess communication; Power system modeling; Quality of service; Signal processing algorithms; Speech analysis;
Conference_Titel :
Vehicular Technology Conference, 2002. VTC Spring 2002. IEEE 55th
Print_ISBN :
0-7803-7484-3
DOI :
10.1109/VTC.2002.1002565
