Multirate systems and filter banks
Multirate systems and filter banks
Displacement structure: theory and applications
SIAM Review
Structured matrices and polynomials: unified superfast algorithms
Structured matrices and polynomials: unified superfast algorithms
Digital Signal Processing: System Analysis and Design
Digital Signal Processing: System Analysis and Design
Inversion of Displacement Operators
SIAM Journal on Matrix Analysis and Applications
Time-varying FIR transmultiplexers with minimum redundancy
IEEE Transactions on Signal Processing
Minimum redundancy for ISI free FIR filterbank transceivers
IEEE Transactions on Signal Processing
Orthogonal transmultiplexers in communication: a review
IEEE Transactions on Signal Processing
Redundant filterbank precoders and equalizers. I. Unification andoptimal designs
IEEE Transactions on Signal Processing
Perfect discrete multitone modulation with optimal transceivers
IEEE Transactions on Signal Processing
BER minimized OFDM systems with channel independent precoders
IEEE Transactions on Signal Processing
ISI-free FIR filterbank transceivers for frequency-selectivechannels
IEEE Transactions on Signal Processing
IEEE Transactions on Information Theory
Filterbank transceivers optimizing information rate in block transmissions over dispersive channels
IEEE Transactions on Information Theory
Perfect equalization for DMT systems without guard interval
IEEE Journal on Selected Areas in Communications
Hi-index | 35.68 |
The standard design of multicarrier and single-carrier employing frequency-domain equalization transceivers requires, at least, L elements of redundancy, where L stands for the channel order. The redundancy eliminates the inherent interblock interference (IBI), which is part of all block-based transceivers, and turns the channel matrix circulant. The spectral decomposition of the circulant channel matrix through the discrete Fourier transform (DFT) allows the use of superfast algorithms for both the design of zero-forcing (ZF) and minimum mean squared error (MMSE) equalizers, and the equalization of received signals. However, it is well known that the minimum redundancy for IBI-free designs of block-based transceivers is ⌈L/2⌉. This paper proposes practical ZF and MMSE solutions by using DFT, inverse DFT, and diagonal matrices. In particular, it is shown that, for some particular mild constraints on the channel model, the new designs may have similar bit error rate performance when compared to the standard ones, while keeping the same asymptotic complexity for the equalization process, that is, O(n log2 n umerical operations. The key feature of the proposed transceivers is their higher throughput.