Frequency-Domain Equalization for Orthogonal and Quasi-Orthogonal STBCs over Frequency-Selective Wireless and Power-Line Channels

Transceiver design for STBC transmission over MIMO multiple‐access SC‐FDE systems

“… First of all, it is important to point out that some simulated scenarios of these 2 figures can be considered as reproduced version of numerical results provided in the previous works. For instance, our results for the single‐user Alamouti transmission of Figure can be considered as reproduced version of the results provided in related works, and the single‐user results of Figure for OSTBC and QO‐STBC can also be considered as reproduced version of the results provided in the works of Mheidat et al and Sheikh‐Hosseini et al As can be seen from these 2 figures, our proposed designs for single‐user communications function similar to those ones of these previous works, and hence, the porposed designs subsume the prevoius related works. The results demonstrate that the proposed multiuser designs can successfully suppress the cochannel interference and decode each user separately. Due to this, two‐ and three‐user systems provide a BER performance equal to their single‐user counterparts and this is the reason that it is difficult to see all 3 curves of each STBC scheme in Figures and .…”

“…In contrary to the TBH structure, this design of J =2 users and Q =4 transmit antennas cannot be extended to Q >4 transmit antennas. Perhaps, this limitation is caused by the asymmetric structure of the Jafarkhani code and even exists in the single‐user SC‐FDE systems, exploiting this code for data transmission …”

“…For the OSTBC transmission, these single‐user designs were detailed in the works of Zhou and Giannakis, Al‐Dhahir, and da Silva and Dinis . For QO‐OSTBC schemes, these designs have been reported by da Silva and Dinis, and Mheidat et al In the work of Sheikh‐Hosseini et al, these designs have been extended to a more general structure of OSTBC and QO‐STBC schemes. However, such a design for multiuser communications was only addressed in the work of Younis et al in which a transceiver structure for the Alamouti transmission of a MIMO multiple‐access SC‐FDE system has been designed.…”

Capacity analysis of power line communication point‐to‐point and relay channels

“…Note that OFDM performance is limited by some drawbacks such as high peak to average power ratio and carrier frequency offset sensitivity. Recently, to avoid OFDM limitations, single‐carrier frequency‐domain equalisation (SC‐FDE) has been proposed for PLC systems and employed for both single‐input single‐output and multi‐input multi‐output PLC channels . Despite these communications‐oriented activities of broadband PLC channels, to the best of our knowledge, capacity analysis of these channels exploiting OFDM and SC‐FDE block transmission techniques has not been reported in the literature and this analysis needs new research work.…”