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http://dx.doi.org/10.7840/kics.2015.40.4.637

New Spatial Modulation Scheme based on Quaternary Quasi-Orthogonal Sequence for 8 Transmit Antennas  

Shang, Yulong (Chonnam National University Department of Electronics and Computer Engineering)
Kim, Hojun (Chonnam National University Department of Electronics and Computer Engineering)
Kim, Cheolsung (Chonnam National University Department of Electronics and Computer Engineering)
Jung, Taejin (Chonnam National University Department of Electronics and Computer Engineering)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.40, no.4, 2015 , pp. 637-645 More about this Journal
Abstract
Recently, a spatial modulation (SM) scheme achieving high throughput based on quaternary quasi-orthogonal sequences (Q-QOSs), referred to as Q-QOS-SM, is presented for $N_t=2^n(n=1,2,{\cdots})$ transmit antennas. In this paper, based on the design approach of the conventional Q-QOS-SM, new improved QO-SM (I-QO-SM) schemes are proposed for 8 transmit antennas. The new schemes employ Q-QOSs of length 4 or 2 unlike of 8 in the original one, which guarantees more information bits to be allocated for antenna index parts compared to the conventional Q-QOS-SM. By computer simulation results, the proposed scheme are shown to enjoy much higher throughputs compared to the conventional other SM schemes for all simulation environments. Finally, we also examine and compare analytically the performances of the new and conventional SM schemes by calculating upper-bounds on BER performance.
Keywords
spatial modulation; quaternary quasi-orthogonal sequence; maximum-ratio combining; MIMO; Rayleigh fading;
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Times Cited By KSCI : 2  (Citation Analysis)
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