Index Coded PSK Modulation with Rotated Constellation for Prioritized Receivers

Tom, AE and Rajan, BS (2022) Index Coded PSK Modulation with Rotated Constellation for Prioritized Receivers. In: 95th IEEE Vehicular Technology Conference - Spring, VTC 2022-Spring, 19 - 22 June 2022, Helsinki.

PDF VTC_2022.pdf - Published Version Restricted to Registered users only Download (647kB) | Request a copy

Abstract

Noisy index coding problem over a single-input single-output additive white Gaussian noise (AWGN) broadcast channel has been studied in 4-6. For a given index coding problem with an order of priority among the receivers and a chosen index code of length N results have been reported only for symmetric PSK modulation. In this work we improve the performance of high priority receivers by transmitting the N bits using a rotated M-PSK (M=2 {N}) constellation where half the number of points are rotated by an angle theta, where 0leqthetalt 2pi/M. The results in 4-6 correspond to the case theta=0. We show that the probability of error performance for the high priority receivers improve as theta increases and simultaneously that of the low priority receivers deteriorate. As a result the performance of some of the receivers in the middle of the priority order may remain unchanged. © 2022 IEEE.

Item Type:	Conference Paper
Publication:	IEEE Vehicular Technology Conference
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to the Institute of Electrical and Electronics Engineers Inc.
Keywords:	Broadcasting; Codes (symbols); Gaussian noise (electronic); Phase shift keying; Rotation; Signal receivers, Additive White Gaussian noise; Additive white gaussian noise broadcast channel; Broadcast channels; Coding problems; Index coding; Noisy index coding; Performance; PSK modulation; Rotated constellation; Side information, White noise
Department/Centre:	Division of Electrical Sciences > Electrical Communication Engineering
Date Deposited:	06 Oct 2022 11:13
Last Modified:	06 Oct 2022 11:13
URI:	https://eprints.iisc.ac.in/id/eprint/77261

Actions (login required)

View Item