Uplink Capacity of A Cellular 2-dimensional Block Spread DS-CDMA System

摘要

2-dimensional (2D) block spread direct sequence-code division multiple access (DS-CDMA) allows mutli-rate without causing uplink multi-access interference (MAI) in the presence of a frequency-selective fading channel. However, in a cellular system, the inter-cell interference remains. The site selection diversity (SSD) can be used to reduce the inter-cell interference and increase the uplink capacity. Transmit power control (TPC) is necessary in order to solve the well-known near-far problem. In this paper, we discuss the impact of SSD and TPC on the uplink capacity of 2D block spread DS-CDMA and compare it with that of conventional.