Large-scale multi-user multiple-input multipleoutput (MIMO) techniques have the potential to bring tremendous improvements for future communication systems. Counterintuitively, the practical issues of having uncertain channel knowledge, high propagation losses, and implementing optimal non-linear precoding are solved more-or-less automatically by enlarging system dimensions. The computational p...

The use of multiple antennas to improve the reliability and capacity of wireless communication has been around for a while, leading to the concept of multiple-input multiple-output (MIMO) communications. To enable full MIMO potentials, the precoding design has been recognized as a crucial component. This thesis aims to design multiuser MIMO precoders of practical interest to achieve high reliab...

Massive multiple-input multiple-output (MIMO) techniques have the potential to bring tremendous improvements in spectral efficiency to future communication systems. Counterintuitively, the practical issues of having uncertain channel knowledge, high propagation losses, and implementing optimal nonlinear precoding are solved more-or-less automatically by enlarging system dimensions. However, the...

Hybrid precoding can significantly reduce the number of required radio frequency (RF) chains in millimeter-Wave (mmWave) massive MIMO systems. However, existing hybrid precoding based on singular value decomposition (SVD) requests the complicated bit allocation to match the different signal-tonoise-ratios (SNRs) of different sub-channels. In this paper, we propose a geometric mean decomposition...

|A new combined precoding/shaping technique for fast digital transmission over twisted pair lines is proposed. Major advantages of this \dynamics shaping" are: Dynamics of the signal at the input of the decision device are reduced by a great amount. Thereby, A/D-conversion, adaptive equalization, and symbol timing are rather facilitated. A trade-o between signal dynamics at the transmitter outp...

We consider a precoding scheme without modulo operation at the receiver for the Gaussian channel with Gaussian interference which is known causally at the transmitter. Modulo operation which is conventionally applied to the received signal for the sake of convenience in analysis causes information loss. In this paper, we investigate the gain in capacity by removing modulo operation at the recei...

Current trends in the development of high-data-rate wireless systems focus on the integration of orthogonal frequencydivision multiplexing (OFDM) and multiple-input?multiple-output (MIMO).The combination of OFDM and the Multiple-InputMultiple-Output (MIMO) technique represents a promising candidate for future broadband wireless systems. This paper addresses the Inter Carrier Interference (ICI) ...

A novel linear precoding method that combines Multiuser Interference (MAI) cancellation, pre-RAKE filtering and Transmitter (Tx) antenna diversity is proposed for the downlink of the Code Division Multiple Access (CDMA) channel. It is demonstrated that this method has better performance than single user space-time pre-RAKE precoding with relatively low increase in complexity. In addition, sever...

This paper considers the vector Gaussian broadcast channel where a single transmitter with multiple antennas sends independent information to multiple receivers. An achievable rate region is derived by decomposing the broadcast channel into a series of single-user channels with non-causal side information. The side information may be completely pre-subtracted using precoding techniques. A pract...

In this study, linear precoding scheme for Multi-User Multiple Inputs Multiple Outputs (MU-MIMO) system is introduced. The Proposed method optimizes Per-Antenna Signal to Leakage Plus Noise Ratio (PASLNR) criteria and make use of Fukunaga-Koontz Transforms (FKT) computation to develop simple precoding algorithm. However, the linear technique available in the literature so far use Per-User Signa...