DocumentCode :
826349
Title :
Implementing interference cancellation to increase the EV-DO Rev A reverse link capacity
Author :
Hou, Jilei ; Smee, John E. ; Pfister, Henry D. ; Tomasin, Stefano
Volume :
44
Issue :
2
fYear :
2006
Firstpage :
58
Lastpage :
64
Abstract :
This article provides the principles and practice of how interference cancellation can be implemented on the EV-DO Rev A reverse link. It is shown that applying interference cancellation to CDMA achieves the multiple access channel sum rate capacity for either frame synchronous or asynchronous users. The per user SINR gain from space-time interference cancellation translates directly into a CDMA capacity gain of the same factor, allowing EV-DO Rev A to support more users with higher data rates. We demonstrate how interference cancellation can be added to base station processing without modifying user terminals, EV-DO standards, or network coverage. We present commercially viable receiver architectures for implementing interference cancellation with the asynchronism and H-ARQ of EV-DO RevA, and explain why closed loop power control can operate the same way it does today. Network level simulations over a wide range of channels confirm that interference cancellation offers significant capacity gains for all users, while maintaining the same link budget and system stability.
Keywords :
closed loop systems; code division multiple access; interference suppression; multiuser channels; power control; radio receivers; radiofrequency interference; telecommunication control; CDMA; EV-DO Rev A reverse link capacity; H-ARQ; asynchronous users; base station processing; closed loop power control; frame synchronous users; multiple access channel sum rate capacity; receiver architectures; space-time interference cancellation; Base stations; Decoding; Delay; IP networks; Integrated circuit modeling; Interference cancellation; Multiaccess communication; Power control; Signal processing; Web and internet services;
fLanguage :
English
Journal_Title :
Communications Magazine, IEEE
Publisher :
ieee
ISSN :
0163-6804
Type :
jour
DOI :
10.1109/MCOM.2006.1593551
Filename :
1593551
Link To Document :
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