Title :
A comparison between single code and multiple code transmission schemes in a CDMA system
Author :
Ramakrishna, Sudhir ; Holtzman, Jack M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Rutgers Univ., Piscataway, NJ, USA
Abstract :
Two transmission schemes for the mobiles in a CDMA system are compared. In the first scheme which is used presently, referred to as the single code scheme, transmission is achieved by using a single spreading code. In the other, called the multi-code scheme, the bit stream to be transmitted is split into several parallel streams. Each stream is then spread by a code out of a set of orthogonal codes, and then transmitted in parallel. It is shown that despite the dynamic range requirements being quite different, the interference properties of these two schemes, which affect the bit error rate, are identical
Keywords :
cellular radio; code division multiple access; codes; error statistics; radiofrequency interference; spread spectrum communication; BER; bit error rate; cellular CDMA system; dynamic range requirements; interference properties; multi-code scheme; multiple code transmission; orthogonal codes; parallel streams; single code transmission; spreading code; Bit error rate; Bit rate; Dynamic range; Intelligent networks; Interference; Laboratories; Lifting equipment; Multiaccess communication; Multimedia systems; Quality of service;
Conference_Titel :
Vehicular Technology Conference, 1998. VTC 98. 48th IEEE
Conference_Location :
Ottawa, Ont.
Print_ISBN :
0-7803-4320-4
DOI :
10.1109/VETEC.1998.683690
