Improving Generalized Spatial Modulation Using Translation Patterns

Singla, Lakshit and Natarajan, Lakshmi Prasad (2020) Improving Generalized Spatial Modulation Using Translation Patterns. IEEE Communications Letters, 24 (12). pp. 2814-2818. ISSN 1089-7798

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Generalized spatial modulation (GSM) is a spectral-efficient technique used in multiple-input multiple-output (MIMO) wireless communications when the number of radio frequency chains at the transmitter is less than the number of transmit antenna elements. We propose a family of signal constellations, as an improvement over GSM, which splits the information bits into three parts, and encodes the first part into a set of complex symbols, the second part into the choice of a subset of antennas activated for transmission (as in GSM), and the third into a translation pattern that offsets the symbols transmitted through the activated antennas. The nominal coding gain (the ratio of the squared minimum distance between transmit vectors to the transmit power) of our scheme is higher than that of GSM by at least 0.86 dB, and this improvement can be as much as 2.87 dB based on the system parameters. We show that the new scheme has advantages over other known signal constellations for GSM, in terms of error performance, nominal coding gain and design flexibility.

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IITH Creators:
IITH CreatorsORCiD
Singla, LakshitUNSPECIFIED
Natarajan, Lakshmi Prasad
Item Type: Article
Uncontrolled Keywords: Design flexibility; Error performance; Radio frequency chains; Signal constellation; Spatial modulations; Translation patterns; Transmit antenna; Wireless communications;Antennas; MIMO systems; Modulation; Radio transmission
Subjects: Electrical Engineering
Divisions: Department of Electrical Engineering
Depositing User: . LibTrainee 2021
Date Deposited: 06 Jul 2021 09:14
Last Modified: 06 Jul 2021 09:14
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