In this paper we compare different transmultiplexer structures with respect to the ISI/ICI occuring for typical time–invariant channels. In particular we consider wavelet–type, Gabor-type (the class containing OFDM and DMT) and Wilson-type (offset-QAM/OFDM) transmultiplexer. We present both theoretical results (based on a recently developed perturbation theory of coherent Riesz bases) and numer...

In this paper, we analyze the outage performance and diversity-multiplexing tradeoff (DMT), originally introduced by Zheng and Tse, for certain classes of multiple antenna systems. In particular, three types of practical channel models such as Rician model, rankdeficient model, and spatially correlated model are considered. The asymptotic behaviors of the outage are analyzed in the limit of hig...

We consider a general multiple antenna network with multiple sources, multiple destinations and multiple relays in terms of diversity-multiplexing tradeoff (DMT). We examine several projections of this most general problem taking into account the network geometry (clustered or non-clustered), the processing capability of the relays (half-duplex or full-duplex) and the number of antennas the nod...

We consider single-source single-sink (ss-ss) multihop relay networks, with slow-fading links and single-antenna half-duplex relay nodes. While two-hop cooperative relay networks have been studied in great detail in terms of the diversitymultiplexing gain tradeoff (DMT), few results are available for more general networks. In a companion paper, we characterized end points of DMT of arbitrary ne...

Discrete multi tone (DMT) uses an inverse discrete fourier transform (IDFT) to modulate data on the carriers. The high side lobes of the IDFT filter bank can lead to spurious emissions (egress) in unauthorised frequency bands. Applying a window function within the DMT symbol alleviates this, but introduces distortions that are generally not easy to compensate for. In this paper a special class ...

Discrete multitone (DMT) uses an inverse discrete Fourier transform (IDFT) to modulate data on the carriers. The high sidelobes of the IDFT filter bank used can lead to spurious emissions (egress) in unauthorized frequency bands. Applying a window function within the DMT symbol can alleviate this. However, window functions either require additional redundancy or will introduce distortions that ...

An all-digital implementation of multicarrier modulation called discrete multitone (DMT) modulation has been standardised for asymmetric digital subscriber line (ADSL), ADSL2, ADSL2+ and VDSL [1][3]. ADSL modems rely on DMT modulation, which divides a broadband channel into many narrowband subchannels and modulated encoded signals onto the narrowband subchannels [4], [5]. With advanced digital ...

We propose a new, low-complexity frequency-domain equalizer for discrete multitone (DMT) systems, which, in the absence of a guard interval, utilizes existing redundancy in the frequency domain to completely eliminate intersymbol and interchannel interferences. A perfect reconstruction condition is derived for the noise-free case leading to a sparse equalizer matrix structure. It is furthermore...