Title

Detecting Developing Volcanic Unrest

Abstract

In this paper we show how to optimize QAM signal constellation which minimizes bit error probabilities with nonuniform sources on AWGN and Rayleigh fading channel. The optimal signal constellation is not equally spaced. We show that the optimal system has a lower error probability than a conventional system, i.e., a system with source coding, equiprobable symbols, and equal space constellation. In several cases presented in this paper the error probability of the optimal system is significantly lower than in the conventional system. We prove that even with equal symbol probabilities the equal space constellation is not optimal for 16QAM, but only asymptotically optimal. Finally, we evaluate the robustness of constellations to estimation error in symbol probabilities. © 2012 IEEE.

Publication Date

5-31-2012

Publication Title

Conference Proceedings - IEEE SOUTHEASTCON

Number of Pages

-

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/SECon.2012.6196985

Socpus ID

84861494723 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84861494723

This document is currently not available here.

Share

COinS