Title :
Multiuser decision-feedback equalization of block-spread multirate transmissions for QoS wireless networking
Author :
Stamoulis, Anastasios ; Giannakis, Georgios B.
Author_Institution :
Dept. of Electr. & Comput. Eng., Minnesota Univ., Minneapolis, MN, USA
Abstract :
Multiuser decision feedback (DF) receivers can be employed to improve the bit error performance at the physical layer of wireless networks. Given a wireless network framework capable of utilizing “capacity” gains at the physical layer, DF receivers elevate the provisioned QoS guarantees. This paper develops closed-form FIR DF receivers suitable for multirate multipath transparent CDMA transmissions with block spreading codes. Capitalizing on the multiuser interference elimination capabilities of our CDMA framework, our DF receivers outperform both the linear and the successive interference canceller (SIC) receivers. Simulations illustrate the merits of our designs
Keywords :
FIR filters; block codes; channel capacity; code division multiple access; decision feedback equalisers; error statistics; interference suppression; multipath channels; multiuser channels; quality of service; radio networks; radio receivers; radiofrequency interference; spread spectrum communication; QoS wireless networking; bit error performance; block spreading codes; block-spread multirate transmissions; capacity gain; closed-form FIR DF receivers; linear interference canceller receiver; multirate multipath transparent CDMA transmission; multiuser decision feedback receivers; multiuser decision-feedback equalization; multiuser interference elimination; physical layer; simulations; successive interference canceller receiver; wireless networks; Base stations; Bit error rate; Computer errors; Decision feedback equalizers; Finite impulse response filter; Media Access Protocol; Multiaccess communication; Physical layer; Throughput; Wireless networks;
Conference_Titel :
Wireless Communications and Networking Confernce, 2000. WCNC. 2000 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-6596-8
DOI :
10.1109/WCNC.2000.904665
