title: SER performance of enhanced spatial multiplexing codes with ZF/MRC receiver in time-varying Rayleigh fading channels.
abstract: We propose enhanced spatial multiplexing codes (E-SMCs) to enable various encoding rates. The symbol error rate (SER) performance of the E-SMC is investigated when zero-forcing (ZF) and maximal-ratio combining (MRC) techniques are used at a receiver. The proposed E-SMC allows a transmitted symbol to be repeated over time to achieve further diversity gain at the cost of the encoding rate. With the spatial correlation between transmit antennas, SER equations for M-ary QAM and PSK constellations are derived by using a moment generating function (MGF) approximation of a signal-to-noise ratio (SNR), based on the assumption of independent zero-forced SNRs. Analytic and simulated results are compared for time-varying and spatially correlated Rayleigh fading channels that are modelled as first-order Markovian channels. Furthermore, we can find an optimal block length for the E-SMC that meets a required SER.
authors.affiliation: Department of Electrical, Electronic and Control Engineering, Hankyong National University, Anseong 456-749, Republic of Korea.
authors.forename: In-Ho
authors.initials: IH
authors.lastname: Lee
mesh_terms: D000465:Algorithms; D008962:Models, Theoretical