Companding system with time clustering

Osamu Takyu, Tomoaki Ohtsuki, Masao Nakagawa

Research output: Contribution to conferencePaper

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
Pages1075-1079
Number of pages5
Publication statusPublished - 2004 Dec 1
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

Keywords

  • Companding method
  • Peak power problem

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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  • Cite this

    Takyu, O., Ohtsuki, T., & Nakagawa, M. (2004). Companding system with time clustering. 1075-1079. Paper presented at 2004 IEEE 15th International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2004, Barcelona, Spain.