Title :
Experiments on coherent multicode DS-CDMA
Author :
Dohi, Tomohiro ; Okumura, Yukihiko ; Higashi, Akihiro ; Ohno, Koji ; Adachi, Fumiyuki
Author_Institution :
NTT Mobile Commun. Network Inc., Japan
Abstract :
Direct sequence code division multiple access (DS-CDMA) is a promising candidate for 3rd generation mobile communications systems. We propose a coherent multicode DS-CDMA (CM-CDMA) scheme. The major features of the proposed access scheme are application of pilot symbol-aided coherent RAKE, traffic-adaptive transmit power control, orthogonal multicode transmission, and concatenated channel coding. A series of laboratory and field tests have been conducted. The measured results for the pilot symbol-aided coherent RAKE, transmit power control based on SIR measurements and multicode transmission are presented
Keywords :
Rayleigh channels; adaptive control; channel coding; code division multiple access; concatenated codes; fading; land mobile radio; power control; pseudonoise codes; radio links; radio receivers; radiofrequency interference; spread spectrum communication; telecommunication control; telecommunication traffic; 3rd generation mobile communications systems; Rayleigh fading; SIR measurements; coherent multicode DS-CDMA; concatenated channel coding; direct sequence code division multiple access; experiments; field tests; laboratory tests; measured results; multicode transmission; orthogonal multicode transmission; pilot symbol-aided coherent RAKE; radio links; traffic adaptive transmit power control; 3G mobile communication; Channel coding; Communication system traffic control; Concatenated codes; Direct-sequence code-division multiple access; Laboratories; Multiaccess communication; Power control; Power measurement; Testing;
Conference_Titel :
Vehicular Technology Conference, 1996. Mobile Technology for the Human Race., IEEE 46th
Conference_Location :
Atlanta, GA
Print_ISBN :
0-7803-3157-5
DOI :
10.1109/VETEC.1996.501439
