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Title: Combining space frequency coding with a pre-filtering technique for TDD downlink MC-CDMA systems in a beyond 3G context
Author: Silva, Adão
Gameiro, Atílio
Keywords: Antenna arrays
Block codes
Computer simulation
Natural frequencies
Signal encoding
Signal interference
Turbo codes
Communication channels (information theory)
Computational complexity
Mobile telecommunication systems
Signal filtering and prediction
Base station (BS)
Mobile terminal (MT)
Spatial diversity
Channel distortions
Multiple access interference
Pre-filtering technique
Code division multiple access
Signal encoding
Issue Date: 2005
Publisher: Institution of Engineering and Technology
Abstract: This paper deals with downlink space-frequency block coding with a joint pre-filtering and spreading technique for time division duplex MC-CDMA. We consider the use of antenna arrays at the base station (BS) and a single antenna at the mobile terminal (MT). The space-frequency block codes allow that the spatial diversity be efficiently exploited and the linear multi-user pre-filtering technique allows to format the transmitted signals so that the multiple access interference and channel distortions at mobile terminals are completely removed, keeping the MT at low complexity. Simulations results are carried out in scenarios with both perfect and imperfect channel estimates and using the channel turbo code specified for current UMTS system, to demonstrate the effectiveness of the proposed SFBC with a linear multi-user pre-filtering approach.
Peer review: yes
ISBN: 1-4244-0816-4
ISSN: 0537-9989
Appears in Collections:DETI - Comunicações

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