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

Text
09169879.pdf
Download (427kB)

Abstract

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.

[error in script]

IITH Creators:

IITH Creators	ORCiD
Singla, Lakshit	UNSPECIFIED
Natarajan, Lakshmi Prasad	http://orcid.org/0000-0003-1552-5240

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

URI:

http://raiithold.iith.ac.in/id/eprint/8137