• DocumentCode
    2595704
  • Title

    Very efficient frequency usage system using convolutional spread time signals based on complete complementary code

  • Author

    Suehiro, Naoki ; Kuroyanagi, Noriyoshi ; Imoto, Toshiaki ; Matsufuji, Shinya

  • Author_Institution
    Graduate Sch. of Syst. & Inf. Eng., Tsukuba Univ., Ibaraki, Japan
  • Volume
    2
  • fYear
    2000
  • fDate
    2000
  • Firstpage
    1567
  • Abstract
    We have proposed a method for increasing the information transmission rate and the frequency usage rate based on a new method for estimating multipath channels and spread time signals convolution. We used a pilot signal and data-transmission signals in the same frequency and in the same time. For this purpose, we used the complete complementary code on approximately synchronized systems. The information transmission rate came to (1.3/k) chip/bit, where k was the QAM factor. In this paper, a new usage method for a complementary code is proposed. The new method is far simpler than the old method. By applying the proposed usage method for a complete complementary code on the above high rate information transmission method, the high rate information transmission can be realized easier
  • Keywords
    codes; convolution; data communication; multipath channels; parameter estimation; quadrature amplitude modulation; synchronisation; QAM factor; approximately synchronized systems; channel estimation; complete complementary code; convolutional spread time signals; data-transmission signals; efficient frequency usage system; frequency usage rate; information transmission rate; multipath channels; pilot signal; spread time signals convolution; Convolution; Convolutional codes; Frequency estimation; Frequency synchronization; Large scale integration; Multiaccess communication; Multipath channels; Quadrature amplitude modulation; Signal design; Systems engineering and theory;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Personal, Indoor and Mobile Radio Communications, 2000. PIMRC 2000. The 11th IEEE International Symposium on
  • Conference_Location
    London
  • Print_ISBN
    0-7803-6463-5
  • Type

    conf

  • DOI
    10.1109/PIMRC.2000.881682
  • Filename
    881682