CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
Abstract—Relay cooperation has been recognized as an important mechanism to enhance connectivity and throughput in multi-hop wireless networks, especially under varying channel c...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
—We consider linear precoding and decoding in the downlink of a multiuser multiple-input, multiple-output (MIMO) system. In this scenario, the transmitter and the receivers may e...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
—Reliable wireless communications often requires accurate knowledge of the underlying multipath channel. This typically involves probing of the channel with a known training wave...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
Cognitive radio is a desirable technique for secondary users to utilize the spectrum gray space. In order to avoid intolerable interference to primary users, the transmission powe...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
Abstract –Given a network targeting information transmission, this paper considers the problem of identifying a set of edges or nodes whose transmission is sufficient to determin...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
—The error floor of bit-interleaved coded modulation with iterative decoding (BICM-ID) can be minimized for a particular constellation by maximizing the harmonic mean of the squ...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
— We develop distributed scheduling schemes that are based on simple random access algorithms and that have no message passing. In spite of their simplicity, these schemes are sh...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
—This paper improves on the best-known runtime and measurement bounds for a recently proposed Deterministic sublinear-time Sparse Fourier Transform algorithm (hereafter called DS...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
Abstract— According to the cognitive radio paradigm, a terminal or subsystem will opportunistically select a frequency band for data transmission. Because the spectrum is shared,...
CISS
2008
IEEE
14 years 1 months ago
2008
IEEE
Abstract – In this paper, a variational message passing framework is proposed for Markov random fields. Analogous to the traditional belief propagation algorithm, variational mes...