On the gains of fixed relays in cellular networks with intercell interference
SPAWC 2009, 10th IEEE International Workshop on Signal Processing Advances in Wireless Communications, June 21-24, 2009, Perugia, Italy
In this paper, we consider a cellular network assisted by fixed relay stations (RS), which are used by mobile stations (MS) to access the base station (BS) via a relaying strategy, namely Amplify-and-forward (AF) and Compress-and-forward (CF). We analyze the achievable sum-of-rates for uplink communications. It is assumed that mobile signals and relay signals are emitted on orthogonal bands, with the possibility of having a larger bandwidth (BW) on the relay-to-base links. Our key result is that with a relay bandwidth just twice that of the mobile’s bandwidth, the system capacity approaches that of an ideal distributed antenna system (DAS), while the ideal DAS requires new backhaul links with very high capacity. Moreover, with the successive interference cancellation (SIC) decoder at the BS, it is shown that under certain conditions the fairness performance in terms of minimum user rates achieved by relay-assisted cellular systems is the same as that of an ideal DAS.
| Mots Clés: | antennas, cellular radio, interference suppression, radio networks |
| Type: | Conférence |
| Langue: | English |
| Ville: | Perugia |
| Pays: | ITALIE |
| Date: | Juin 2009 |
| Département: | Communications Mobiles |
| Eurecom ref: | 2839 |
| Copyright: | © 2009 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE. |
| Bibtex: | @inproceedings{EURECOM+2839, doi = { http://dx.doi.org/10.1109/SPAWC.2009.5161856 }, year = {2009}, title = {{O}n the gains of fixed relays in cellular networks with intercell interference}, author = {{Y}ilmaz, {E}rhan and {K}nopp, {R}aymond and {G}esbert, {D}avid }, booktitle = {{SPAWC} 2009, 10th {IEEE} {I}nternational {W}orkshop on {S}ignal {P}rocessing {A}dvances in {W}ireless {C}ommunications, {J}une 21-24, 2009, {P}erugia, {I}taly}, address = {{P}erugia, {ITALIE}}, month = {06}, url = {http://www.eurecom.fr/publication/2839} } |
| Voir aussi: |
|
Permalink: http://www.eurecom.fr/publication/2839
