Conventionally, the signal transmission and information fusion are assumed to operate over orthogonal channels in a Wireless Sensor Network (WSN). Hence, the network bandwidth is insufficient for transferring data and cannot improve throughput. Using Complex Field Network Coded (CFNC) relay-assisted communications, this inefficiency can be resolved. Non-Orthogonal Channels (NOC) are used to operate these CFNC relay-assisted communications. They provide temporal and spatial diversity.
A predetermined signature is assigned to every sensor in the CFNC system and prevents Multi-Access Interference (MAI). Therefore, the signature selection and the relay power allocation become crucial for WSNs. A method is developed to adjust the sensor signatures and the relay power that utilize average symbol error rate of the network, together with the theoretical results. Results from the simulation process prove that the network performance is enhanced by the relay power allocation and the proposed signature selection method in the CFNC relay-assisted wireless sensor network.
|Commitee:||Tran, Boi, Yeh, Hen-Geul|
|School:||California State University, Long Beach|
|School Location:||United States -- California|
|Source:||MAI 56/02M(E), Masters Abstracts International|
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