Maximum Free Distance Rate 1/2 Spectral Line Free Convolutional Codes for BPSK/Q-BOPPM TH-IR UWB Systems

Author

Villarreal-Reyes, S. ; Edwards, R.M. ; Villasenor-Gonzalez, L. ; Conte-Galvan, R. ; Aquino-Santos, R.

Author_Institution

Electron. & Telecommun. Dept., CICESE Res. Center, Ensenada, Mexico

Volume

21

Issue

3

fYear

2011

fDate

3/1/2011 12:00:00 AM

Firstpage

166

Lastpage

168

Abstract

The topic of spectral shaping is of major interest in the design of time hopping (TH) impulse radio (IR) ultra wideband (UWB) communications systems. In this letter novel rate 1/2 “spectral line free” convolutional codes for binary phase shift keying (BPSK) and quaternary biorthogonal pulse position modulated (Q-BOPPM) TH-IR UWB systems are introduced. When using these codes in BPSK/Q-BOPPM TH-IR UWB systems, the power spectral density of the signal shows no spectral lines, even when the encoder input consists of a non-uniform distributed binary data stream. The reported codes have maximum free-distance and thus offer significant forward error correction capabilities.

Keywords

convolutional codes; forward error correction; orthogonal codes; phase shift keying; pulse position modulation; ultra wideband communication; BPSK-Q-BOPPM TH-IR UWB systems; binary phase shift keying; forward error correction; impulse radio; maximum free distance rate; nonuniform distributed binary data stream; power spectral density; quaternary biorthogonal pulse position modulated systems; spectral line free convolutional codes; time hopping communications systems; ultrawideband communications systems; Binary phase shift keying; Bit error rate; Convolutional codes; Distributed databases; Feedforward neural networks; Polynomials; Convolutional codes; power spectral density (PSD); time hopping impulse radio (TH-IR); ultra-wideband (UWB);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2103398

Filename

5716649