Superconducting multiuser detector for 3G base stations

In this paper we discuss the application of rapid single flux quantum (RSFQ) superconducting digital technology for multiuser detection in wideband code division multiple access base stations. The extraordinary speed of the RSFQ circuits allows us to implement one of the most reliable types of multi...

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Bibliographic Details
Published in:Superconductor science & technology 2002-01, Vol.15 (1), p.126-132
Main Authors: Kidiyarova-Shevchenko, A Yu, Platov, K, Ottosson, Tony, Ström, Erik
Format: Article
Language:English
Subjects:
Applied sciences
Design. Technologies. Operation analysis. Testing
Electronics
Exact sciences and technology
Integrated circuits
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
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Summary:In this paper we discuss the application of rapid single flux quantum (RSFQ) superconducting digital technology for multiuser detection in wideband code division multiple access base stations. The extraordinary speed of the RSFQ circuits allows us to implement one of the most reliable types of multiuser detector, the successive interference canceller (SIC). The RSFQ SIC consists of the partial cross-correlation unit, responsible for the regeneration of the interference at the receiver and linear combinations of the partial cross-correlations using the path gains, and the iterative linear system solver, which removes the interference from the received signal. We expect that the receiver can yield a capacity gain a factor of two greater than that of a conventional receiver.
ISSN:0953-2048
1361-6668
DOI:10.1088/0953-2048/15/1/322