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The novel algorithm proposed in this paper is an optimal algorithm, both blind and training data based channel estimation algorithms are described; however, the issue of computationally efficient multiuser detection is not addressed. The multiuser detection is investigated in a long code CDMA system over frequency selective multipath channel. The issue of channel estimation is not addressed here,...
This paper proposes a novel hybrid linear prediction and QR based blind equalization algorithm. The algorithm is more robust to channel order under/over estimation. The algorithm is a data based (as opposed to channel based) algorithms and is also numerically superior. Simulations clearly indicate that our algorithm performs very well under channel order under/over estimation, when LP and QRD based...
Coherent signaling over a fading channel requires the receiver to have knowledge of the current fading state (CSIR). In order to proactively prevent outages, the transmitter requires knowledge of the fading state (CSIT) to perform power control. Typically, the channel state is estimated by using a training signal, and the channel state information contains some error. In this work, we examine the...
Inter-carrier-interference (ICI) phenomena in the orthogonal frequency division multiplexing (OFDM) systems complicates the channel estimation and equalization tasks at the receiver side when the number of carriers increases, since the minimum mean squared error (MMSE) and zero forcing (ZF) criterions require non-trivial matrix inversion. The complexity can be reduced without strongly affecting the...
This contribution deals with the synchronization and the fractionally spaced equalization for multiple-input multiple-output (MIMO) single-carrier (SC) systems with frequency domain equalization (FDE). Synchronization, channel estimation and the proposed equalization are evaluated as a system employing real-world over-air transmission in the 2.4 GHz ISM-band by using our current MIMO test-bed (A....
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