Power Scaling for Spatial Modulation with Limited Feedback | Zendy

Yue Xiao | Zendy; Qian Tang | Zendy; Lisha Gong | Zendy; Ping Yang | Zendy; Zongfei Yang | Zendy

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Power Scaling for Spatial Modulation with Limited Feedback

Author(s) -

Yue Xiao,

Qian Tang,

Lisha Gong,

Ping Yang,

Zongfei Yang

Publication year - 2013

Publication title -

international journal of antennas and propagation

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.282

H-Index - 37

eISSN - 1687-5877

pISSN - 1687-5869

DOI - 10.1155/2013/718482

Subject(s) - mimo , antenna diversity , computer science , modulation (music) , weighting , spatial modulation , scaling , constellation , electronic engineering , detector , euclidean distance , algorithm , constellation diagram , power (physics) , antenna (radio) , bit error rate , telecommunications , mathematics , engineering , physics , artificial intelligence , channel (broadcasting) , geometry , decoding methods , astronomy , quantum mechanics , acoustics

Spatial modulation (SM) is a recently developed multiple-input multiple-output (MIMO) technique which offers a new tradeoff between spatial diversity and spectrum efficiency, by introducing the indices of transmit antennas as a means of information modulation. Due to the special structure of SM-MIMO, in the receiver, maximum likelihood (ML) detector can be combined with low complexity. For further improving the system performance with limited feedback, in this paper, a novel power scaling spatial modulation (PS-SM) scheme is proposed. The main idea is based on the introduction of scaling factor (SF) for weighting the modulated symbols on each transmit antenna of SM, so as to enlarge the minimal Euclidean distance of modulated constellations and improve the system performance. Simulation results show that the proposed PS-SM outperforms the conventional adaptive spatial modulation (ASM) with the same feedback amount and similar computational complexity

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