Distributed space-time coding for multihop transmission in power line communication networks

In this paper, we consider transmission in relatively wide-stretched power line communication (PLC) networks, where repeaters are required to bridge the source-to-destination distance. In particular, it is assumed that each network node is a potential repeater and that multihop transmission is accom...

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Vydané v:IEEE journal on selected areas in communications Ročník 24; číslo 7; s. 1389 - 1400
Hlavní autori: Lampe, L., Schober, R., Simon Yiu
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: New York IEEE 01.07.2006
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Predmet:
Block codes
Bridges
Broadcast channel
Broadcasting
Channels
collision channel
Communications networks
Delay
distributed space-time coding
multihop transmission
Networks
power line communication (PLC)
Power line communications
Power lines
Product life cycle
Programmable control
repeater
Repeaters
Routing protocols
Signal processing
Signatures
Spread spectrum communication
Studies
Transmitters
ISSN:0733-8716, 1558-0008
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Shrnutí:In this paper, we consider transmission in relatively wide-stretched power line communication (PLC) networks, where repeaters are required to bridge the source-to-destination distance. In particular, it is assumed that each network node is a potential repeater and that multihop transmission is accomplished in an ad hoc fashion without the need for complex routing protocols. In such a scenario, due to the broadcasting nature of the power line channel, multiple repeater nodes may receive and retransmit the source message simultaneously. It is shown that, if no further signal processing is applied at the transmitter, simultaneous retransmission often deteriorates performance compared with single-node retransmission. We therefore advocate the application of distributed space-time block codes (DSTBCs) to the problem at hand. More specifically, we propose that each network node is assigned a unique signature sequence, which allows efficient combining at the receiver. Most notably, DSTBC-based retransmission does not require explicit collaboration among network nodes for multihop transmission and detection complexity is not increased compared with single-node retransmission. Numerical results for multihop transmission over PLC networks show that DSTBC-based retransmission achieves a considerably improved performance in terms of required transmit power and multihop delay compared with alternative retransmission strategies.
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ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2006.874419