Dirk T.M Slock

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In this paper we present a new practical method for sum-rate maximization for a Multi-User MIMO system. Through this work, we first establish a general formula for the optimal receiver derived from the sum-rate expression called MSR (Maximum Sum Rate) receiver. The obtained MSR receiver is a linear function of the used linear transmitter. In a second step,(More)
Blind audio source separation (BASS) arises in a number of applications in speech and music processing such as speech enhancement, speaker diarization, automated music transcription etc. Generally, BASS methods consider multichannel signal capture. The single microphone case is the most difficult underdetermined case, but it often arises in practice. In the(More)
Blind audio source separation (BASS) arises in a number of applications in speech and music processing such as speech enhancement, speaker diarization, automated music transcription etc. Generally, BASS methods consider multichannel signal capture. The single microphone case is the most difficult underdetermined case, but it often arises in practice. In the(More)
We consider the multi-input single-output (MISO) Broadcast Channel (BC), the multi-user (MU) downlink in a cell with a multi-antenna base station and mobile terminals equipped with a single antenna. Most techniques designed for this channel require accurate current channel state information at the transmitter (CSIT). However, a radically different approach(More)
In this paper, we propose some ameliorations and a comparison of linear closed form precoding techniques for Multi-User MIMO (MU-MIMO) systems. In fact, the sum-rate, one of the most important parameters in the design of communication systems, is analysed through the study of two existing linear precoding schemes. These schemes are the PU-MMSE precoder(More)
This paper proposes a new iterative implementation algorithm for sum-rate maximization in a Multiuser MIMO system (MU-MIMO). The proposed algorithm is based on joint precoder and decoder optimization. For that we considered the best existing precoder design algorithm for a MISO multiuser system proposed in [1]. This algorithm is based on the Lagrangian(More)
We investigate in this paper the performance achieved by some SDMA (Space Division Multiple Access) access techniques in a Broadcast channel configuration. The study includes the two basic linear precoding schemes present in the literature namely the CF (Closed Form) and the Iterative precoding techniques. These techniques have already been widely studied(More)
Precise automatic music transcription requires accurate modeling and identification of the spectral content of the audio signal. Whereas a deterministic model in terms of modulated periodic signals allows to distinguish different notes, the presence of multiple notes separated by octaves poses a big problem since they share the same periodicity, and hence(More)
The Interfering Broadcast Channel (IBC) applies to the downlink of multi-cell networks, which are limited by multiuser (MU) interference. The interference alignment (IA) concept has shown that interference does not need to be inevitable. In particular spatial IA in the MIMO IBC allows for low latency. However, IA requires perfect and typically global(More)