Abstract
In this paper, a detailed signal-to-interference ratio (SIR) characterization is presented based on collected Received Signal Strength Indicators, in laboratory controlled conditions. The system model consists of mobile transmitting nodes operating at 2.336GHz, two base stations (BSs) both equipped with dual-branch selection combining (SC) receivers, and an additional SC receiver, which combines the two BSs’ outputs based on criterion of higher SIR. From acquired and normalized data, the histogram is obtained. Further, the minimization procedure based on global optimization strategy of simulated annealing, is utilized in order to reach accurate channel modelling in terms of measurable physical parameters. Acquired experimental results corroborate κ–μ fading model when κ=1.837 and μ=1.057. The overall analysis demonstrates the efficiency of diversity reception in terms of improved outage performance. In addition, assuming the channels are symmetrical, the results can be useful for the downlink transmission in terms of reducing the transmission power and thus reducing the interfering effects towards other devices.
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