An improvement in Transmit Diversity for MIMO SC-FDE

-Single-Carrier Frequency Domain Equalizer (SCFDE) scheme has several advantages than multi-carrier scheme OFDM. SC-FDE avoids all the drawbacks of OFDM. This paper analyzes the diversity gain of multi-input-multi-output (MIMO) SCFDE in frequency selective channels. This paper fully analyzes the Alamouti signaling scheme under linear equalizers such as Zeroforcing (ZF) and MMSE equalizers. The diversity gain is function of channel memory v, data block length L, data rate R and antenna configuration. Below a threshold rate full diversity is achieved, while at higher rate diversity decreases. Our analysis shows that the diversity of Alamouti MIMO SC-FDE is improved at higher rates i.e twice the diversity of conventional SISO scheme.