A new approach to achieve multiple packet reception for ad hoc networks

An algorithm for the recovery of multiple packets is proposed in this paper. The algorithm exploits the fact that every transmitter sends an implicit training sequence along with the information to accomplish multiple user equalization and interference suppression in the challenging scenario of an asynchronous random access ad hoc network. The proposed method has the advantage of allowing the transmission of complex data over time-dispersive multipath channels. A simulation example is presented that corroborates the interference suppression capabilities of the algorithm.

[1]  T. Kailath,et al.  A least-squares approach to blind channel identification , 1995, IEEE Trans. Signal Process..

[2]  Jitendra K. Tugnait,et al.  On channel estimation using superimposed training and first-order statistics , 2003, IEEE Communications Letters.

[3]  Haidong Zhu,et al.  Pilot embedding for joint channel estimation and data detection in MIMO communication systems , 2003, IEEE Communications Letters.

[4]  Lang Tong,et al.  A multiqueue service room MAC protocol for wireless networks with multipacket reception , 2003, TNET.

[5]  William A. Gardner,et al.  Spectral self-coherence restoral: a new approach to blind adaptive signal extraction using antenna arrays , 1990, Proc. IEEE.

[6]  M. Viberg,et al.  Superimposed periodic pilots for blind channel estimation , 2001, Conference Record of Thirty-Fifth Asilomar Conference on Signals, Systems and Computers (Cat.No.01CH37256).

[7]  Xin Wang,et al.  A bit-map-assisted dynamic queue protocol for multiaccess wireless networks with multiple packet reception , 2002, IEEE Trans. Signal Process..

[8]  Behrouz Farhang-Boroujeny,et al.  Pilot-based channel identification: proposal for semi-blind identification of communication channels , 1995 .

[9]  Desmond C. McLernon,et al.  Multiple packet reception in wireless ad hoc networks using polynomial phase-modulating sequences , 2003, IEEE Trans. Signal Process..

[10]  Desmond C. McLernon,et al.  Channel estimation using implicit training , 2004, IEEE Transactions on Signal Processing.

[11]  Desmond C. McLernon,et al.  Blind channel equalization using chirp modulating signals , 2004, IEEE Transactions on Signal Processing.

[12]  Eric Moulines,et al.  Subspace methods for the blind identification of multichannel FIR filters , 1995, IEEE Trans. Signal Process..

[13]  Lang Tong,et al.  Multipacket reception in random access wireless networks: from signal processing to optimal medium access control , 2001, IEEE Commun. Mag..

[14]  Philippe Loubaton,et al.  MIMO blind second-order equalization method and conjugate cyclostationarity , 1999, IEEE Trans. Signal Process..

[15]  F. Mazzenga.  Channel estimation and equalization for M-QAM transmission with a hidden pilot sequence , 2000 .

[16]  Georgios B. Giannakis,et al.  Blind channel identification and equalization with modulation-induced cyclostationarity , 1998, IEEE Trans. Signal Process..