Efficient MAC protocol for subcarrier-wise rate adaptation over WLAN

Authors:
Sung Won Kim;Byung-Seo Kim;Sung Back Hong
Affiliations:
Department of Information and Communication Engineering, Yeungnam University, Gyeongsangbuk-do, Republic of Korea;Department of Computer and Information Communication Engineering, HongIk University, Jochiwon, Chungcheongnam-do, Republic of Korea;Future Network Research Department, Electronics and Telecommunications Research Institute, Daejeon, Republic of Korea
Venue:
EURASIP Journal on Wireless Communications and Networking
Year:
2010

Citing 6
Cited 0

A rate-adaptive MAC protocol for multi-Hop wireless networks

Proceedings of the 7th annual international conference on Mobile computing and networking
Goodput Analysis and Link Adaptation for IEEE 802.11a Wireless LANs

IEEE Transactions on Mobile Computing
Bit loading algorithms for cooperative OFDM systems

EURASIP Journal on Wireless Communications and Networking - Multicarrier Systems
Performance Enhancement of OFDM System in Indoor Wireless Channels Using Loading Algorithm

DESE '09 Proceedings of the 2009 Second International Conference on Developments in eSystems Engineering
Ordered subcarrier selection algorithm for OFDM-based high-speed WLANs

IEEE Transactions on Wireless Communications
SNR gap approximation for M-PSK-Based bit loading

IEEE Transactions on Wireless Communications

Quantified Score

Hi-index	0.00

Visualization

Abstract

While bit-loading algorithms over wireless systems have been extensively studied, the development of a protocol which implements bit-loading-based rate adaptation over wireless systems has not been highlighted. The design of such a protocol is not a trivial problem, due to the overhead associated with the feedback information. In this paper, a novel protocol is proposed to provide an efficient way to implement subcarrier-wise rate adaptation in OFDM-based wireless systems. When receiving a Ready-To-Send (RTS) packet, the receiver determines the number of bits to be allocated on each subcarrier through channel estimation. This decision is delivered to the sender using an additional OFDM symbol in the Clear-To-Send (CTS) packet. That is, bit-allocation over subcarriers is achieved using only one additional OFDM symbol. The protocol enhances the channel efficiency in spite of the overhead of one additional OFDM symbol.