Title :
Integrated design of adaptive receivers and CDMA/PRMA multimedia medium access scheme
Author :
Hoefel, Roger Pierre Fabris ; Cavalcanti, Francisco Rodrigo Porto
Author_Institution :
State Univ of Campinas, Sao Paulo, Brazil
Abstract :
As packet-mode communications become prevalent in upcoming generations of wireless communications systems, the need to investigate the performance of advanced adaptive signal processing techniques in such a context becomes exigent. We evaluate the impact of some of these schemes, namely the adaptive antenna, the adaptive equalization and the decorrelator multiuser detector, in a comparative performance assessment of an uplink joint CDMA/PRMA and a CDMR/ALOHA protocol. Besides the single resource allocation policy for voice-only traffic, the use of multislot and multicode multirate approaches for continuous bit rate (CBR) and variable bit rate video (VBR) traffic transmission is considered. The presented results permit one to analyze the tradeoffs existing between performance and complexity among the different options, allowing then for an integrated design of the medium access control protocols and advanced receiver algorithms
Keywords :
access protocols; adaptive antenna arrays; adaptive equalisers; adaptive signal processing; code division multiple access; decorrelation; multimedia communication; multiuser channels; packet radio networks; packet reservation multiple access; radio receivers; signal detection; telecommunication traffic; visual communication; voice communication; CBR; CDMA/PRMA multimedia medium access; CDMR/ALOHA protocol; VBR; adaptive antenna; adaptive equalization; adaptive receivers; adaptive signal processing; complexity; continuous bit rate; decorrelator multiuser detector; integrated design; medium access control protocols; multicode multirate approach; multislot approach; packet-mode communications; performance assessment; receiver algorithms; resource allocation; uplink; variable bit rate; video traffic transmission; voice-only traffic; wireless communications systems; Adaptive arrays; Adaptive equalizers; Adaptive signal processing; Algorithm design and analysis; Bit rate; Context; Decorrelation; Multiaccess communication; Signal generators; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 2000. IEEE-VTS Fall VTC 2000. 52nd
Conference_Location :
Boston, MA
Print_ISBN :
0-7803-6507-0
DOI :
10.1109/VETECF.2000.886843
