Title :
Capacity and spectral efficiency of hybrid DS/SFH CDMA for uplink and downlink in multi macro cells
Author :
Grujev, Suzana ; Fatah, Omar ; Prasad, Ramjee
Author_Institution :
Telecommun. & Traffic-Control Syst. Group, Delft Univ. of Technol., Netherlands
Abstract :
The performance of a hybrid direct sequence (DS)/slow frequency hopping (FH) CDMA system is investigated for measured Codit COST 207 channel model with randomly generated phases. Performance evaluation in terms of bit error rate, capacity and spectral efficiency is given for the uplink as well as for the downlink. Finally, maximum ratio combining is introduced, to improve the system performance
Keywords :
cellular radio; channel capacity; code division multiple access; diversity reception; error statistics; frequency hop communication; land mobile radio; quadrature phase shift keying; radiofrequency interference; spread spectrum communication; Codit COST 207 channel model; QPSK; bit error rate; capacity; cellular radio; downlink; hybrid DS/SFH CDMA; hybrid direct sequence/slow frequency hopping system; maximum ratio combining; multi macro cells; performance evaluation; randomly generated phases; spectral efficiency; system performance improvement; uplink; Base stations; Bit error rate; Costs; Downlink; Fading; Frequency conversion; Hybrid power systems; Interference; Multiaccess communication; System performance;
Conference_Titel :
Global Telecommunications Conference, 1996. GLOBECOM '96. 'Communications: The Key to Global Prosperity
Conference_Location :
London
Print_ISBN :
0-7803-3336-5
DOI :
10.1109/GLOCOM.1996.591938
