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» Spatially Coupled Codes over the Multiple Access Channel
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GLOBECOM
2009
IEEE
14 years 6 days ago
Robust Cooperative Relaying in a Wireless LAN: Cross-Layer Design and Performance Analysis
—A key technology in cooperative communications is distributed space-time coding (DSTC) which achieves spatial diversity gain from multiple relays. A novel DSTC, called randomize...
Pei Liu, Chun Nie, Elza Erkip, Shivendra S. Panwar
GLOBECOM
2008
IEEE
13 years 12 months ago
Optimal LLR Clipping Levels for Mixed Hard/Soft Output Detection
Abstract—Consider a communications system where the detector generates a mix of hard and soft outputs, which are then fed into a soft-input channel decoder. In such a setting, it...
Ernesto Zimmermann, David L. Milliner, John R. Bar...
ICC
2007
IEEE
145views Communications» more  ICC 2007»
13 years 11 months ago
Adaptive vs. Diversity Transmission for Multiuser MISO Systems with Imperfect CSIT
Abstract— Adaptive transmission techniques including transmit beamforming, precoding, and opportunistic scheduling offer high spectral efficiency when channel state information ...
Frederick K. H. Lee, Mai H. Vu, Arogyaswami Paulra...
ETT
2006
79views Education» more  ETT 2006»
13 years 5 months ago
On time-varying cyclic delay diversity
: Cyclic Delay Diversity (CDD) was introduced in 2001 to obtain spatial diversity in an Orthogonal Division Multiplexing (OFDM) based transmission system. In contrast to Space-Time...
Gerd Richter, Martin Bossert, Elena Costa, Martin ...
INFOCOM
2007
IEEE
13 years 11 months ago
Cross-Layer Analysis of Rate Adaptation, DCF and TCP in Multi-Rate WLANs
—Wireless Internet access is facilitated by IEEE 802.11 WLANs that, in addition to realizing a specific form of CSMA/CA—distributed coordination function (DCF)— implement a ...
Jaehyuk Choi, Kihong Park, Chongkwon Kim