Abstract
In this study, a conceptual transmission scheme that adjusts rate and power of codewords which are sent over a slowly fading channel, when quantised and possibly erroneous channel state information (CSI) is available at the transmitter, is designed. Here, the goal is to maximise data throughput or the expected data rate using a two-way training protocol and temporal power control at the transmitter. The common models used in analysis either assume perfect CSI at the receiver or noiseless state feedback links. However, in practical systems, neither is the channel estimate known perfectly at the receiver nor is the feedback link perfect. Analytical expressions for the relationship between the average power and data transmission rate are obtained for various scenarios. The average spectral efficiency is analysed under various fading channels to evaluate the system performance. Here, the focus is on the average channel conditions to improve the system throughput.
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