Adaptive modulation for multihop communications exploiting multihop diversity
Adaptive modulation for multihop communications exploiting multihop diversity
In multihop diversity aided multihop links, the nodes are assumed to have buffers for temporarily storing
their received packets for further transmission at instances of good channel quality. Since adaptive modulation is employed, the number of packets in each time slot is affected both by the channel quality and the buffer fullness. During each time-slot (TS), the criterion used for activating a specific hop is that of transmitting the highest number of packets. When more than one hop are capable of transmitting the same number of packets, the particular hop having the highest channel quality (reliability) is activated. Hence we refer to this regime as the Maximum Throughput Adaptive Rate Transmission (MTART) scheme. The bit error ratio (BER), the outage probability (OP), the throughput as well as the bandwidth-efficiency of the MTART scheme is analyzed. Our results demonstrate that our MTART regime has the potential of significantly outperforming conventional adaptive modulation. Naturally, the BER is improved by the buffering scheme advocated at the cost of an increased delay. Hence the distribution of the end-to-end packet delay will also be characterized.
Dong, Chen
dac9f067-33fb-47a2-b789-b3d131d8d866
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Dong, Chen
dac9f067-33fb-47a2-b789-b3d131d8d866
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Dong, Chen, Yang, Lie-Liang and Hanzo, L.
(2014)
Adaptive modulation for multihop communications exploiting multihop diversity.
Pre-print.
(Submitted)
Abstract
In multihop diversity aided multihop links, the nodes are assumed to have buffers for temporarily storing
their received packets for further transmission at instances of good channel quality. Since adaptive modulation is employed, the number of packets in each time slot is affected both by the channel quality and the buffer fullness. During each time-slot (TS), the criterion used for activating a specific hop is that of transmitting the highest number of packets. When more than one hop are capable of transmitting the same number of packets, the particular hop having the highest channel quality (reliability) is activated. Hence we refer to this regime as the Maximum Throughput Adaptive Rate Transmission (MTART) scheme. The bit error ratio (BER), the outage probability (OP), the throughput as well as the bandwidth-efficiency of the MTART scheme is analyzed. Our results demonstrate that our MTART regime has the potential of significantly outperforming conventional adaptive modulation. Naturally, the BER is improved by the buffering scheme advocated at the cost of an increased delay. Hence the distribution of the end-to-end packet delay will also be characterized.
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MHD_AMC_MAC_B4.gif
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MHD_AMC_MAC_B8.gif
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berfadingamc.m
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MHDAMCResponse3.m
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MAC-Protocol.pdf
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Submitted date: 2014
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 348686
URI: http://eprints.soton.ac.uk/id/eprint/348686
PURE UUID: cc7471b2-cc5b-47db-bd1c-05b6e8515ffd
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Date deposited: 18 Feb 2013 13:16
Last modified: 15 Mar 2024 02:59
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Contributors
Author:
Chen Dong
Author:
Lie-Liang Yang
Author:
L. Hanzo
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