BPSK Modulation with Unequal Power Allocation Considering A Priori Knowledge

Authors:

Brüggen, T. ,  Adrat, M. ,  Vary, P.

Book Title:

Proceedings of IEEE International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC)

Organization:

IEEE

Volume:

2

Pages:

p.p. 1071-1075

Address:

Berlin, Germany

Date:

Sep. 2005

Language:

English

Abstract

A well known technique to protect bits with different sensitivities against channel errors is unequal error protection (UEP) by selective channel coding. However, some transmission systems such as Bluetooth and DECT include only weak or no channel coding. For those systems modulation with unequal power allocation (MUPA) is an appropriate technique to realize UEP without channel coding. MUPA allocates different transmission power to the modulation symbols according to the individual bit error sensitivities. In this paper we apply the MUPA concept to systems with softbit source decoding and soft demodulation, and enhance the MUPA approach by taking a 1st order Markov model in terms of 1st order a priori knowledge (AK1) into account (MUPA-AK1).

Download

BibTeX

Copyright © by IEEE
brueggen05c.pdf

© 2025 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

---