Tianyu Wu
Design and Analysis of Multi-User SDMA Systems with Noisy Limited CSIT Feedback.
Tue, 01/19/2010 - 16:01 — SomNambulAuthors: Tianyu Wu, Vincent K.N. Lau
Subjects: Information Theory
AbstractIn this paper, we consider spatial-division multiple-access (SDMA) systems
with one base station with multiple antennae and a number of single antenna
mobiles under noisy limited CSIT feedback. We propose a robust noisy limited
feedback design for SDMA systems. The solution consists of a real-time robust
SDMA precoding, user selection and rate adaptation as well as an offline
feedback index assignment algorithm. The index assignment problem is cast into
a Traveling Sales Man problem (TSP).A Low-Overhead Energy Detection Based Cooperative Sensing Protocol for Cognitive Radio Systems.
Wed, 08/19/2009 - 19:30 — SomNambulAuthors: Shunqing Zhang, Tianyu Wu, Vincent K. N. Lau
Subjects: Information Theory
AbstractCognitive radio and dynamic spectrum access represent a new paradigm shift in
more effective use of limited radio spectrum. One core component behind dynamic
spectrum access is the sensing of primary user activity in the shared spectrum.
Conventional distributed sensing and centralized decision framework involving
multiple sensor nodes is proposed to enhance the sensing performance.
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