Spatial multiplexing over Rician fading channels: Linear precoding transmission strategies

Using information about the channel at the transmitter can improve the performance of multi-input multi-output (MIMO) communication systems. When perfect channel state information (CSI) is available, data can be multiplexed and optimized over independent spatial channels. However, when the available channel information is imperfect or partial, crosstalk between the spatial channels is inevitable complicating the design of the transmitted data. This paper extends our earlier work on practical bit and power loading algorithms that enable the use of partial CSI for spatial multiplexing, to the case of correlated Rician fading CSI models. Furthermore, the bit and power loading algorithm is updated for improved BER performance as well as lower computational complexity.