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
Link To Document :
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