Block-Based Spatial Modulation: Constellation Design and Low-Complexity Detection

Gadhai, Shyam; Budhiraja, Rohit

doi:10.1109/tcomm.2020.2979117

Cited by 8 publications

(2 citation statements)

References 35 publications

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“…Similarly, the conditional probability described in (5) is not available at the receiver, unless the transmission matrix X is known. By introducing latent variables, the unavailable conditional probability defined in equation ( 5) can be expressed in terms of more traceable joint distributions over the expanded observation spaces and latent variables [19].…”

Section: The Proposed Blind Detectormentioning

confidence: 99%

“…Spatial modulation (SM) is a new physical layer technology, where additional information is conveyed through activating only a single transmit antenna (TA) from several TAs in each time slot [1][2][3]. SM inherently enhances the spectral efficiency (SE) of multi-input multi-output (MIMO) communications via including several passive TAs without sacrificing power efficiency [4,5]. In each transmission interval, the active antenna index changes according to a portion of information bits, using the antenna-switching mechanism.…”

Section: Introductionmentioning

confidence: 99%

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A blind detection method for spatial modulation in MIMO communications

Khanzadeh

Naeiny

2020

IET Communications

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Spatial modulation (SM) is one of the probable candidates to be utilised in the fifth generation of wireless networks due to its power and spectral efficiencies. Since only one active transmit antenna exists in spatial modulation, inter‐channel interferences are avoided and the number of radio frequency (RF) chains is reduced. However, channel estimation is a major challenge in spatial modulation communication systems. In this study, a novel blind signal and channel estimation method for spatial modulation‐based multi‐input multi‐output communications, based on the well‐known Expectation‐Maximisation algorithm, is presented. This blind detector requires only a few pilot symbols at the beginning of the transmission to resolve the inherent phase and permutation ambiguities. Simulation results demonstrate that the proposed detector performs very similar to the optimum detector with full channel state information and outperforms existing blind detectors.

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Section: The Proposed Blind Detectormentioning

confidence: 99%