Title :
Semi-blind collision resolution in random access wireless ad hoc networks
Author :
Zhao, Qing ; Tong, Lang
Author_Institution :
Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA
fDate :
10/1/2000 12:00:00 AM
Abstract :
A new signal processing based collision resolution technique for random access wireless ad hoc networks is proposed. Without assuming the knowledge of the propagation channels and signal waveforms, the proposed algorithm is capable of separating colliding packets by exploiting channel diversities and known symbols embedded in data packets. Compared with training-based methods, the proposed algorithm requires considerably fewer known symbols. This algorithm can be applied to various spread spectrum and narrowband systems along with existing medium access control protocols
Keywords :
access protocols; code division multiple access; least squares approximations; multi-access systems; multiuser channels; packet radio networks; radio receivers; random processes; signal processing; spread spectrum communication; CDMA; channel diversities; colliding packets; data packets; least squares receiver; medium access control protocols; narrowband systems; propagation channels; random access wireless ad hoc networks; semi-blind collision resolution; signal processing based collision resolution; signal waveforms; spread spectrum systems; training-based methods; Ad hoc networks; Intelligent networks; Mobile ad hoc networks; Modulation coding; Multiaccess communication; Narrowband; Protocols; Signal processing algorithms; Signal resolution; Spread spectrum communication;
Journal_Title :
Signal Processing, IEEE Transactions on
