Sciweavers

TWC
2010
13 years 6 months ago
Distributed consensus-based demodulation: algorithms and error analysis
This paper deals with distributed demodulation of space-time transmissions of a common message from a multiantenna access point (AP) to a wireless sensor network. Based on local me...
Hao Zhu, Alfonso Cano, Georgios B. Giannakis
TSP
2010
13 years 6 months ago
Sparse channel estimation for multicarrier underwater acoustic communication: from subspace methods to compressed sensing
Abstract--In this paper, we investigate various channel estimators that exploit channel sparsity in the time and/or Doppler domain for a multicarrier underwater acoustic system. We...
Christian R. Berger, Shengli Zhou, James C. Preisi...
TSP
2010
13 years 6 months ago
Fast algorithms for the computation of sliding sequency-ordered complex hadamard transform
Fast algorithms for computing the forward and inverse sequency-ordered complex Hadamard transforms (SCHT) in a sliding window are presented. The first algorithm consists of decompo...
Jiasong Wu, Huazhong Shu, Lu Wang, Lotfi Senhadji
TSMC
2010
13 years 6 months ago
An Architecture for Adaptive Algorithmic Hybrids
We describe a cognitive architecture for creating more robust intelligent systems by executing hybrids of algorithms based on different computational formalisms. The architecture ...
Nicholas L. Cassimatis, Perrin G. Bignoli, Magdale...
TON
2010
198views more  TON 2010»
13 years 6 months ago
On Wireless Scheduling Algorithms for Minimizing the Queue-Overflow Probability
Abstract-- In this paper, we are interested in wireless scheduling algorithms for the downlink of a single cell that can minimize the queue-overflow probability. Specifically, in a...
V. J. Venkataramanan, Xiaojun Lin
TON
2010
139views more  TON 2010»
13 years 6 months ago
Opportunistic and Cooperative Spatial Multiplexing in MIMO Ad Hoc Networks
With the fast progress of MIMO technology and its growing applications in networks, it is important to develop techniques to enable more efficient MIMO network communications. Howe...
Shan Chu, Xin Wang
TON
2010
171views more  TON 2010»
13 years 6 months ago
Constructing Maximum-Lifetime Data-Gathering Forests in Sensor Networks
Abstract--Energy efficiency is critical for wireless sensor networks. The data-gathering process must be carefully designed to conserve energy and extend network lifetime. For appl...
Yan Wu, Zhoujia Mao, Sonia Fahmy, Ness B. Shroff
TON
2010
126views more  TON 2010»
13 years 6 months ago
Cost-Effective Multiperiod Spraying for Routing in Delay-Tolerant Networks
In this paper, we present a novel multiperiod spraying algorithm for routing in delay-tolerant networks (DTNs). The goal is to minimize the average copy count used per message unti...
Eyuphan Bulut, Zijian Wang, Boleslaw K. Szymanski
TON
2010
171views more  TON 2010»
13 years 6 months ago
Offline Routing and Wavelength Assignment in Transparent WDM Networks
We consider the offline version of the routing and wavelength assignment (RWA) problem in transparent all-optical networks. In such networks and in the absence of regenerators, the...
Konstantinos Christodoulopoulos, Konstantinos Mano...
TON
2010
125views more  TON 2010»
13 years 6 months ago
Computational analysis and efficient algorithms for micro and macro OFDMA downlink scheduling
OFDMA is one of the most important modulation and access methods for the future mobile networks. Before transmitting a frame on the downlink, an OFDMA base station has to invoke an...
Reuven Cohen, Liran Katzir