TY - JOUR
T1 - Temporal synchronization of MIMO wireless communication in the presence of interference
AU - Bliss, Daniel W.
AU - Parker, Peter A.
N1 - Funding Information:
Manuscript received July 24, 2009; accepted October 28, 2009. First published November 20, 2009; current version published February 10, 2010. This work was supported by DARPA under Air Force Contract FA8721-05-C-0002. Opinions, interpretations, conclusions, and recommendations are those of the authors and are not necessarily endorsed by the United States Government. This paper has been approved for public release, distribution unlimited. The associate editor coordinating the review of this manuscript and approving it for publication was Prof. Amir Leshem.
PY - 2010/3
Y1 - 2010/3
N2 - In wireless communications systems that potentially operate in interference, acquisition and temporal alignment of a transmitted signal by a receiver can be the most fragile component of the link. In this paper, synchronization detection in the presence of interference for multiple-input multiple-output (MIMO) communication is discussed. Here, synchronization indicates signal acquisition and timing estimation at the receiver, and is formulated as a binary statistical hypothesis test. Transmit sequences from multiple antennas are received by multiple antennas in noisy environments with spatially correlated noise (interference). Flatfading and frequency-selective channel models for both the interference and signal of interest are considered. By applying wellknown multiple antenna approaches to the MIMO synchronization problem, a number of new synchronization test statistics are introduced. These test statistics are motivated by minimum-meansquare-error (MMSE) beamformers, generalized-likelihood ratio test (GLRT), least-squared (LS) channel estimation, and spatial invariance. Test statistics appropriate for orthogonal- frequencydivision-multiplexing (OFDM) systems are considered, including test statistics that take advantage of cyclic prefixes and of pilot sequences within anOFDMsymbol. Performances of various test statistics in terms of probability of missing detection for some probability of a false detection are shown to vary by multiple orders of magnitude in the presence of interference.
AB - In wireless communications systems that potentially operate in interference, acquisition and temporal alignment of a transmitted signal by a receiver can be the most fragile component of the link. In this paper, synchronization detection in the presence of interference for multiple-input multiple-output (MIMO) communication is discussed. Here, synchronization indicates signal acquisition and timing estimation at the receiver, and is formulated as a binary statistical hypothesis test. Transmit sequences from multiple antennas are received by multiple antennas in noisy environments with spatially correlated noise (interference). Flatfading and frequency-selective channel models for both the interference and signal of interest are considered. By applying wellknown multiple antenna approaches to the MIMO synchronization problem, a number of new synchronization test statistics are introduced. These test statistics are motivated by minimum-meansquare-error (MMSE) beamformers, generalized-likelihood ratio test (GLRT), least-squared (LS) channel estimation, and spatial invariance. Test statistics appropriate for orthogonal- frequencydivision-multiplexing (OFDM) systems are considered, including test statistics that take advantage of cyclic prefixes and of pilot sequences within anOFDMsymbol. Performances of various test statistics in terms of probability of missing detection for some probability of a false detection are shown to vary by multiple orders of magnitude in the presence of interference.
KW - Adaptive signal detection
KW - Cochannel interference
KW - Interference suppression
KW - Multiple-input multiple-output (MIMO) systems
KW - Synchronization
KW - Wireless LAN
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U2 - 10.1109/TSP.2009.2037067
DO - 10.1109/TSP.2009.2037067
M3 - Article
AN - SCOPUS:80052304695
VL - 58
SP - 1794
EP - 1806
JO - IEEE Transactions on Acoustics, Speech, and Signal Processing
JF - IEEE Transactions on Acoustics, Speech, and Signal Processing
SN - 1053-587X
IS - 3 PART 2
ER -