Sciweavers

501 search results - page 12 / 101
» Communication Lower Bounds Using Dual Polynomials
Sort
View
DCC
2007
IEEE
14 years 8 months ago
Small weight codewords in LDPC codes defined by (dual) classical generalized quadrangles
We find lower bounds on the minimum distance and characterize codewords of small weight in low-density parity check codes defined by (dual) classical generalized quadrangles. We a...
Jon-Lark Kim, Keith E. Mellinger, Leo Storme
SAT
2007
Springer
146views Hardware» more  SAT 2007»
14 years 2 months ago
Algorithms for Variable-Weighted 2-SAT and Dual Problems
Abstract. In this paper we study NP-hard weighted satisfiability optimization problems for the class 2-CNF providing worst-case upper time bounds. Moreover we consider the monoton...
Stefan Porschen, Ewald Speckenmeyer
CORR
2008
Springer
88views Education» more  CORR 2008»
13 years 8 months ago
Lower bounds for distributed markov chain problems
We study the worst-case communication complexity of distributed algorithms computing a path problem based on stationary distributions of random walks in a network G with the caveat...
Rahul Sami, Andy Twigg
GLOBECOM
2010
IEEE
13 years 6 months ago
Layered Tabu Search Algorithm for Large-MIMO Detection and a Lower Bound on ML Performance
In this paper, we are concerned with low-complexity detection in large multiple-input multiple-output (MIMO) systems with tens of transmit/receive antennas. Our new contributions i...
N. Srinidhi, Tanumay Datta, Ananthanarayanan Chock...
ICC
2007
IEEE
105views Communications» more  ICC 2007»
14 years 3 months ago
Lower Bounds on the Capacity Regions of the Relay Channel and the Cooperative Relay-Broadcast Channel with Non-Causal Side Infor
— In this work, coding for the relay channel (RC) and the cooperative relay broadcast channel (RBC) controlled by random parameters are studied. In the first channel, the RC, in...
Abdellatif Zaidi, Luc Vandendorpe, Pierre Duhamel