Sciweavers

ICASSP
2008
IEEE
14 years 21 days ago
Maximum likelihood binary detection in improper complex gaussian noise
In a wide range of communication systems, including DS-CDMA and OFDM systems, the signal-of-interest might be corrupted by an improper [1] (also called non circularly symmetric [2...
Amirhossein S. Aghaei, Konstantinos N. Plataniotis...
ICASSP
2008
IEEE
14 years 21 days ago
Link throughput of multi-channel opportunistic access with limited sensing
—We aim to characterize the maximum link throughput of a multi-channel opportunistic communication system. The states of these channels evolve as independent and identically dist...
Keqin Liu, Qing Zhao
ICASSP
2008
IEEE
14 years 21 days ago
Topic mining on web-shared videos
Internet videos have grown exponentially with the help from video sharing websites. Automatic topic mining is therefore increasingly important for organizing and navigating such l...
Lu Liu, Yong Rui, Lifeng Sun, Bo Yang, Jianwei Zha...
ICASSP
2008
IEEE
14 years 21 days ago
Utility-based power control for peer-to-peer cognitive radio networks with heterogeneous QoS constraints
Transmit-power control is a critical task in cognitive radio (CR) networks. In the present contribution, adherence to hierarchies between primary and secondary users in a peer-to-...
Nikolaos Gatsis, Antonio G. Marqués, Georgi...
ICASSP
2008
IEEE
14 years 21 days ago
A factor graph approach to joint iterative data detection and channel estimation in pilot-assisted IDMA transmissions
We consider a pilot-assisted interleave-division multiple access (IDMA) system transmitting over block-fading channels. We describe this system in terms of a factor graph and use ...
Clemens Novak, Gerald Matz, Franz Hlawatsch
ICASSP
2008
IEEE
14 years 21 days ago
Joint source-channel mappings for the relay channel
Johannes Karlsson, Mikael Skoglund
ICASSP
2008
IEEE
14 years 21 days ago
Efficient soft demodulation of MIMO QPSK via semidefinite relaxation
We develop a computationally efficient and memory efficient approach to (near) maximum a posteriori probability demodulation for MIMO systems with QPSK signalling, based on semi...
Mehran Nekuii, Mikalai Kisialiou, Timothy N. David...
ICASSP
2008
IEEE
14 years 21 days ago
Throughput analysis of wireless mesh networks
Wireless mesh networks are rapidly deployable for many applications. The throughput of such a network depends on the schemes used for medium access control. In this paper, we pres...
Yuan Yu, Yi Huang, Bin Zhao, Yingbo Hua
ICASSP
2008
IEEE
14 years 21 days ago
Second-order near-field localization with automatic paring operation
Most exiting array signal processing techniques for bearing estimation are strongly relied on the far-field assumption. When the sources are located close to the array, these tec...
Rémy Boyer, José Picheral
ICASSP
2008
IEEE
14 years 21 days ago
Robust adaptive beamforming for general-rank signal models using positive semi-definite covariance constraint
In this paper, we develop an improved approach to the worstcase robust adaptive beamforming for general-rank signal models by means of taking into account the positive semi-defin...
Haihua Chen, Alex B. Gershman