[HCL15] New Insights into Time Synchronization of MIMO Systems with Interference
Conférence Internationale avec comité de lecture :
European Signal Processing Conference (EUSIPCO),
September 2015,
pp.1-5,
Nice,
France,
Mots clés: Time Synchronization, MIMO, Single Carrier, GLRT, Interference
Résumé:
This paper concerns time synchronization of MIMO systems.
The current most powerful receiver is a generalized likelihood
ratio test (GLRT) receiver, and assumes unknown, stationary,
circular, and spatially colored Gaussian noise. However, this
receiver is more complex than its non-GLRT counterparts,
which, unfortunately, do not perform as well in most cases.
As the complexity is an important issue for practical implementations
and may be prohibitive for a large number of antennas,
the purpose of this paper is to propose several ways of
decreasing the complexity of the GLRT receiver while keeping
its performance. Simplifications of the GLRT receiver and
optimization of parameters, jointly with new low-complexity
receivers, are introduced. The performance of the new optimized
receivers is analyzed and compared with that of the
GLRT receiver, enlightening the practical interest of the proposed
receivers