Abstract
In this paper, a distributed spatial modulation based cooperative diversity scheme for relay wireless networks is proposed. Where, the space-time block code is exploited to integrate with distributed spatial modulation. Therefore, the interested transmission scheme achieves high diversity gain. By using Monte-Carlo simulation based on computer, we showed that our proposed transmission scheme outperforms state-of-the-art cooperative relaying schemes in terms bit error rate (BER) performance.
Highlights
In the future, wireless networks are faced too many user demands for high rate and low delay transmission
In references [5]–[6], authors investigated cooperative transmission schemes based on distributed spatial modulation (DSM), and showed that DSM enables to achieve high diversity gain being closed to the case of ones without using DSM
– The DSM-CD scheme, which achieves two advantages: (i) the Alamouti distributed space-time block code (STBC) is integrated with DSM to enhance diversity gain; (ii) the cooperative mechanism between the source node and the activated relay, which significantly decreases errors occurred by the distributed spatial modulation, and the bit error rate (BER) performance of the system is improved
Summary
Wireless networks are faced too many user demands for high rate and low delay transmission. In references [5]–[6], authors investigated cooperative transmission schemes based on DSM, and showed that DSM enables to achieve high diversity gain being closed to the case of ones without using DSM Researchers in [5]–[6] still omit some problems that are necessary to continue researching more: The first, authors in [5] just consider in relaying transmission without cooperation among relays or between a source and any relay to forward data, simultaneously In this case, the transmission scheme can achieve the gain of DSM but not spatial diversity gain. – The DSM-CD scheme, which achieves two advantages: (i) the Alamouti distributed STBC is integrated with DSM to enhance diversity gain; (ii) the cooperative mechanism between the source node and the activated relay, which significantly decreases errors occurred by the distributed spatial modulation, and the BER performance of the system is improved.
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