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In this paper, a spatial multiplexing multiple-input multiple-output (MIMO)system when hardware along with RF imperfections occur during the communicationsetup is analytically investigated. More specifically, the scenario of hardwareimpairments at the transceiver and imperfect channel state information (CSI) atthe receiver is considered, when successive interference cancellation (SIC) isimplemented. Two popular linear detection schemes are analyzed, namely, zeroforcing SIC (ZF-SIC) and minimum mean-square error SIC (MMSE-SIC). Newanalytical expressions for the outage probability of each SIC stage areprovided, when independent and identically distributed Rayleigh fading channelsare considered. In addition, the well-known error propagation effect betweenconsecutive SIC stages is analyzed, while closed-form expressions are derivedfor some special cases of interest. Finally, useful engineering insights aremanifested, such as the achievable diversity order, the performance differencebetween ZF- and MMSE-SIC, and the impact of imperfect CSI and/or the presenceof hardware impairments to the overall system performance.

On the Joint Impact of Hardware Impairments and Imperfect CSI on Successive Decoding