Companding system with time clustering

Osamu Takyu, Tomoaki Ohtsuki, Masao Nakagawa

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In the compressing and expanding (companding) method, at the transmitter, baseband signals are compressed for reducing peak-to-average power (PAPR) and at the receiver, the received signals are expanded for removing the distortion caused by the compressing. However, since the signals are distorted by the band pass filter (BPF), the high power amplifier (HPF), and the channel fading, the distortion caused by the compressing cannot be removed by expanding the received signals. We propose the novel companding system that compensates the distortions caused by not only the compressing but also the BPF, the HPF, and the fading. From the computer simulation, we show that the proposed companding system achieves better BER than the conventional one with the same level of the spectrum in the out-of-bandwidth.

Original languageEnglish
Title of host publicationIEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC
Pages1075-1079
Number of pages5
Volume2
Publication statusPublished - 2004
Externally publishedYes
Event2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004 - Barcelona, Spain
Duration: 2004 Sep 52004 Sep 8

Other

Other2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004
CountrySpain
CityBarcelona
Period04/9/504/9/8

Fingerprint

Bandpass filters
Power amplifiers
Fading (radio)
Fading channels
Transmitters
Bandwidth
Computer simulation

Keywords

  • Companding method
  • Peak power problem

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Takyu, O., Ohtsuki, T., & Nakagawa, M. (2004). Companding system with time clustering. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC (Vol. 2, pp. 1075-1079)

Companding system with time clustering. / Takyu, Osamu; Ohtsuki, Tomoaki; Nakagawa, Masao.

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. Vol. 2 2004. p. 1075-1079.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Takyu, O, Ohtsuki, T & Nakagawa, M 2004, Companding system with time clustering. in IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. vol. 2, pp. 1075-1079, 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004, Barcelona, Spain, 04/9/5.
Takyu O, Ohtsuki T, Nakagawa M. Companding system with time clustering. In IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. Vol. 2. 2004. p. 1075-1079
Takyu, Osamu ; Ohtsuki, Tomoaki ; Nakagawa, Masao. / Companding system with time clustering. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC. Vol. 2 2004. pp. 1075-1079
@inproceedings{24bfca9995b14fb4990f0fcc6dd0d9cc,
title = "Companding system with time clustering",
abstract = "In the compressing and expanding (companding) method, at the transmitter, baseband signals are compressed for reducing peak-to-average power (PAPR) and at the receiver, the received signals are expanded for removing the distortion caused by the compressing. However, since the signals are distorted by the band pass filter (BPF), the high power amplifier (HPF), and the channel fading, the distortion caused by the compressing cannot be removed by expanding the received signals. We propose the novel companding system that compensates the distortions caused by not only the compressing but also the BPF, the HPF, and the fading. From the computer simulation, we show that the proposed companding system achieves better BER than the conventional one with the same level of the spectrum in the out-of-bandwidth.",
keywords = "Companding method, Peak power problem",
author = "Osamu Takyu and Tomoaki Ohtsuki and Masao Nakagawa",
year = "2004",
language = "English",
volume = "2",
pages = "1075--1079",
booktitle = "IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC",

}

TY - GEN

T1 - Companding system with time clustering

AU - Takyu, Osamu

AU - Ohtsuki, Tomoaki

AU - Nakagawa, Masao

PY - 2004

Y1 - 2004

N2 - In the compressing and expanding (companding) method, at the transmitter, baseband signals are compressed for reducing peak-to-average power (PAPR) and at the receiver, the received signals are expanded for removing the distortion caused by the compressing. However, since the signals are distorted by the band pass filter (BPF), the high power amplifier (HPF), and the channel fading, the distortion caused by the compressing cannot be removed by expanding the received signals. We propose the novel companding system that compensates the distortions caused by not only the compressing but also the BPF, the HPF, and the fading. From the computer simulation, we show that the proposed companding system achieves better BER than the conventional one with the same level of the spectrum in the out-of-bandwidth.

AB - In the compressing and expanding (companding) method, at the transmitter, baseband signals are compressed for reducing peak-to-average power (PAPR) and at the receiver, the received signals are expanded for removing the distortion caused by the compressing. However, since the signals are distorted by the band pass filter (BPF), the high power amplifier (HPF), and the channel fading, the distortion caused by the compressing cannot be removed by expanding the received signals. We propose the novel companding system that compensates the distortions caused by not only the compressing but also the BPF, the HPF, and the fading. From the computer simulation, we show that the proposed companding system achieves better BER than the conventional one with the same level of the spectrum in the out-of-bandwidth.

KW - Companding method

KW - Peak power problem

UR - http://www.scopus.com/inward/record.url?scp=11244320706&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=11244320706&partnerID=8YFLogxK

M3 - Conference contribution

VL - 2

SP - 1075

EP - 1079

BT - IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC

ER -