DMT of Multi-hop Cooperative Networks - Part II: Half-Duplex Networks with Full-Duplex Performance
| dc.creator | Sreeram, K. | |
| dc.creator | Birenjith, S. | |
| dc.creator | Kumar, P. Vijay | |
| dc.date | 2008-08-02 | |
| dc.date.accessioned | 2026-07-07T09:54:26Z | |
| dc.date.available | 2026-07-07T09:54:26Z | |
| dc.description | We consider single-source single-sink (ss-ss) multi-hop relay networks, with slow-fading links and single-antenna half-duplex relay nodes. In a companion paper, we established some basic results which laid the foundation for the results presented here. In the present paper, we consider two families of networks of half-duplex networks. KPP networks may be viewed as the union of K node-disjoint parallel relaying paths. Generalizations of these networks include KPP(I) networks, which permit interference between paths and KPP(D) networks, which possess a direct link between source and sink. We characterize the DMT of these families of networks completely and show that they can achieve the cut-set bound, thus proving that full-duplex performance can be obtained even in the presence of the half-duplex constraint. We then consider layered networks, and prove that a linear DMT between maximum diversity and maximum multiplexing gain is achievable. All protocols in this paper are explicit and use only amplify-and-forward relaying. We also construct codes that achieve the optimal DMT for all the proposed schemes. Two key implications of the results in the paper are that the half-duplex constraint does not entail any rate loss for a large class of cooperative networks and that AF protocols are often optimal. | |
| dc.description | This submission is Part-II of a two-part paper, which is a detailed version of the previous submission arXiv:0802.1888 | |
| dc.identifier | https://arxiv.org/abs/0808.0235 | |
| dc.identifier | http://arxiv.org/abs/0808.0235 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/166312 | |
| dc.subject | Information Theory | |
| dc.title | DMT of Multi-hop Cooperative Networks - Part II: Half-Duplex Networks with Full-Duplex Performance | |
| dc.type | text |