Uplink and downlink SIR analysis for base station placement

Most published work relating to base station placement focuses on desired signal coverage in outdoor wireless systems. However, this approach may not be adequate for future indoor wireless CDMA systems since the systems are interference-limited. In this paper, we present a method for solving the base station placement problem using binary integer programming (BIP). This formulation incorporates coverage, transmitter power and both the uplink and downlink signal-to-interference-ratios into the optimisation process. It is shown that both the uplink and downlink signal-to-interference-ratios should be considered when planning indoor wireless CDMA systems.

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