| M-1-1 Cooperative Protocol Based on OSOC-SS to Improve Bandwidth Utilization in USN |
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Hyung-Yun Kong, Yun-Kyeong Hwang |
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Department of Electrical Engineering, University of Ulsan |
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| Abstract |
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A bandwidth and power efficient high speed ubiquitous sensor network(USN) for realizing a ubiquitous society is a great challenge for researcher community. In this paper we incorporate a cooperative transmission protocol within a special type of multi-code modulation to meet these requirements. Multi-code(Mc) modulation has been developed for high-speed data transmission over wireless channels. We proposed a new class of orthogonal codes for multi-code modulation which is an orthogonal subset of orthogonal codes(OSOC). Our proposed OSOC structure allows us to use only one relay to cooperate M nodes that effectively reduces the bandwidth and power requirement. This protocol is similar to spread-spectrum(SS) technique that can reduce both broad and narrow band jamming. |
| Key words:
USN, Cooperative Transmission, OSOC, Broad Interference |
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