Increasing the CDMA Reverse Link Voice-Data Capacity using a Per Rate Class Interference Method with Optimal Spatial Combining

摘要

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 (MRO) 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.