Increasing the Capacity of IEEE 802.11 Wireless LAN through Cooperative Coded Retransmissions
- Resource Type
- Conference
- Authors
- Loyola, Luis; Lichte, Hermann S.; Aad, Imad; Widmer, Joerg; Valentin, Stefan
- Source
- VTC Spring 2008 - IEEE Vehicular Technology Conference Vehicular Technology Conference, 2008. VTC Spring 2008. IEEE. :1746-1750 May, 2008
- Subject
- Transportation
Wireless LAN
Modulation coding
Throughput
Signal to noise ratio
Forward error correction
Physical layer
MIMO
Peer to peer computing
Rayleigh channels
Computer networks
- Language
- ISSN
- 1550-2252
In this paper a cooperative retransmission scheme for 802.11 WLANs is proposed. The mechanism allows stations with good channel to the access point to retransmit packets on behalf of other stations with worse channel. The cooperative partner selection is carried out in a completely opportunistic and distributed way that is compatible with 802.11. Simulations performed in a realistic WLAN scenario with adaptive modulation show that the system provides considerable gains in terms of goodput and packet error rate in comparison with legacy 802.11.