DocumentCode :
2093821
Title :
Reliable signal transmission in wireless sensor networks with zero bandwidth expansion
Author :
Yang Liu ; Xuanxuan Lu ; Tiffany, Jing Li
Author_Institution :
Electr. & Comput. Eng. Dept., Lehigh Univ., Bethlehem, PA, USA
fYear :
2013
fDate :
9-13 June 2013
Firstpage :
5601
Lastpage :
5606
Abstract :
This paper considers wireless sensor networks with limited bandwidth, where sensors must transmit sensing results that are distorted with noise uncertainty, to the fusion center reliably and efficiently. A class of rate-1 linear complex-field coding (CFC) transmission strategy is developed, to effectively protect the noisy observation of the signals without any bandwidth expansion. Pairwise error probability (PEP) is analyzed, design criterion for optimal complex-field coding strategies is derived, and optimal codes are examined. In addition to maximum likelihood (ML) decoding, a low-complexity decoding scheme termed partially nulling and canceling (PNC) is also proposed. The PNC decoder, representing a midway tradeoff between sphere decoding and (linear) minimum mean square error (MMSE) detection, strikes a good balance between complexity and performance. Extensive simulations show that the proposed CFC is able to reap considerable gains without any bandwith epansion!
Keywords :
error statistics; least mean squares methods; linear codes; maximum likelihood decoding; telecommunication network reliability; wireless sensor networks; ML decoding; MMSE detection; PEP; PNC decoder; low-complexity decoding scheme; maximum likelihood decoding; minimum mean square error detection; optimal codes; optimal complex-field coding strategy; pairwise error probability; partially nulling and canceling decoder; rate-1 linear CFC transmission strategy; rate-1 linear complex-field coding transmission strategy; signal transmission; sphere decoding; wireless sensor networks; zero bandwidth expansion; Complexity theory; Encoding; Sensors; Signal to noise ratio; Wireless communication; Wireless sensor networks; Complex-field Coding (CFC); pairwise error probability; partially nulling and canceling (PNC);
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications (ICC), 2013 IEEE International Conference on
Conference_Location :
Budapest
ISSN :
1550-3607
Type :
conf
DOI :
10.1109/ICC.2013.6655485
Filename :
6655485
Link To Document :
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