Open AccessChannel estimation relying on the minimum bit‐error‐ratio criterion for BPSK and QPSK signals
Author(s) -
Dutta Amit Kumar,
Hari K.V.S.,
Hanzo Lajos
Publication year - 2014
Publication title -
iet communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.355
H-Index - 62
eISSN - 1751-8636
pISSN - 1751-8628
DOI - 10.1049/iet-com.2013.0173
Subject(s) - phase shift keying , channel (broadcasting) , bit error rate , computer science , maximal ratio combining , mathematics , algorithm , telecommunications , fading
The authors consider the channel estimation problem in the context of a linear equaliser designed for a frequency selective channel, which relies on the minimum bit‐error‐ratio (MBER) optimisation framework. Previous literature has shown that the MBER‐based signal detection may outperform its minimum‐mean‐square‐error (MMSE) counterpart in the bit‐error‐ratio performance sense. In this study, they develop a framework for channel estimation by first discretising the parameter space and then posing it as a detection problem. Explicitly, the MBER cost function (CF) is derived and its performance studied, when transmitting binary phase shift keying (BPSK) and quadrature phase shift keying (QPSK) signals. It is demonstrated that the MBER based CF aided scheme is capable of outperforming existing MMSE, least square‐based solutions.