Abstract
The typical behavior of the relay-without-delay channel under low-density parity-check coding and its multiple-unit generalization, termed the relay array, is studied using methods of statistical mechanics. A demodulate-and- forward strategy is analytically solved using the replica symmetric ansatz which is exact in the system studied at Nishimori's temperature. In particular, the typical level of improvement in communication performance by relaying messages is shown in the case of a small and a large number of relay units. © 2007 The American Physical Society.
Original language | English |
---|---|
Article number | 061124 |
Pages (from-to) | 1-8 |
Number of pages | 8 |
Journal | Physical Review E |
Volume | 76 |
Issue number | 6 |
DOIs | |
Publication status | Published - 21 Dec 2007 |
Bibliographical note
Copyright of the American Physical Society.Keywords
- statistical physics
- replica theory
- relay channel
- LDPC codes