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TIT
2002
73views more  TIT 2002»
13 years 7 months ago
Power levels and packet lengths in random multiple access
This paper extends our earlier results. We assume that the receiver has the capability of capturing multiple packets so long as the signal-to-interference-plus-noise ratio (SINR) o...
Wei Luo, Anthony Ephremides
TIT
2002
78views more  TIT 2002»
13 years 7 months ago
Improved upper bounds on sizes of codes
Let ( ) denote the maximum possible number of codewords in a binary code of length and minimum Hamming distance . For large values of , the best known upper bound, for fixed , is t...
Beniamin Mounits, Tuvi Etzion, Simon Litsyn
TIT
2002
142views more  TIT 2002»
13 years 7 months ago
A random matrix model of communication via antenna arrays
Abstract--A random matrix model is introduced that probabilistically describes the spatial and temporal multipath propagation between a transmitting and receiving antenna array wit...
Ralf R. Müller
TIT
2002
77views more  TIT 2002»
13 years 7 months ago
Capacity-achieving sequences for the erasure channel
Abstract-- This paper starts a systematic study of capacityachieving sequences of low-density parity-check codes for the erasure channel. We introduce a class Aof analytic function...
P. Oswald, A. Shokrollahi
TIT
2002
60views more  TIT 2002»
13 years 7 months ago
A Zador-like formula for quantizers based on periodic tilings
We consider Zador's asymptotic formula for the distortion-rate function for a variable-rate vector quantizer in the high-rate case. This formula involves the differential ent...
N. J. A. Sloane, Vinay A. Vaishampayan