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CISS
2008
IEEE
10 years 3 months ago
Compressed channel sensing
—Reliable wireless communications often requires accurate knowledge of the underlying multipath channel. This typically involves probing of the channel with a known training wave...
Waheed Uz Zaman Bajwa, Jarvis Haupt, Gil M. Raz, R...
CISS
2008
IEEE
10 years 3 months ago
Sum transmission power of multiple cooperative secondary transmitters in dynamic spectrum access networks
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...
Juite Hwu, Jinying Chen, Xiaohua Li
CISS
2008
IEEE
10 years 3 months ago
Identifying sufficient statistics in information networks
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...
Huaiyu Dai, Husheng Li
CISS
2008
IEEE
10 years 3 months ago
A genetic algorithm for designing constellations with low error floors
—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...
Matthew C. Valenti, Raghu Doppalapudi, Don J. Torr...
CISS
2008
IEEE
10 years 3 months ago
Throughput of random access without message passing
— 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...
Alexandre Proutiere, Yung Yi, Mung Chiang
CISS
2008
IEEE
10 years 3 months ago
Improved bounds for a deterministic sublinear-time Sparse Fourier Algorithm
—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...
Mark A. Iwen, Craig V. Spencer
CISS
2008
IEEE
10 years 3 months ago
Adversarial interference models for multiantenna cooperative systems
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,...
Anand D. Sarwate, Michael Gastpar
CISS
2008
IEEE
10 years 3 months ago
Distributed estimation in wireless sensor networks via variational message passing
Abstract – In this paper, a variational message passing framework is proposed for Markov random fields. Analogous to the traditional belief propagation algorithm, variational mes...
Yanbing Zhang, Huaiyu Dai
CISS
2008
IEEE
10 years 3 months ago
Memory-constrained ML-optimal tree search detection
— In this paper, we propose a memory-constrained tree search (MCTS) algorithm for the detection in multiple-input multiple-output (MIMO) systems. The MCTS algorithm offers a wide...
Yongmei Dai, Zhiyuan Yan
CISS
2008
IEEE
10 years 3 months ago
Effects of cooperation on the secrecy of multiple access channels with generalized feedback
—We investigate the effects of user cooperation on the secrecy of multiple access channels with generalized feedback (MAC-GF). We show that cooperation can increase the achievabl...
Ersen Ekrem, Sennur Ulukus
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