MIMO support

This paper proposes to extend two Least Squares (LS) channel estimation algorithms based on tensor signal model to MIMO systems supported by Intelligent Reflective Surfaces (IRS). These two algorithms exploit the tensor structure of the pilot signal to establish the cascaded channel estimation problem.

15p vigojek 02-02-2024 3 2   Download

This article investigates digital predistortion (DPD) linearization of hybrid beamforming large-scale antenna transmitters. We propose a novel DPD processing and learning technique for an antenna sub-array, which utilizes a combined signal of the individual power amplifier (PA) outputs in conjunction with a decorrelation-based learning rule. In effect, the proposed approach results in minimizing the nonlinear distortions in the direction of the intended receiver. This feature is highly desirable, since emissions in other directions are naturally weak due to beamforming.

11p son248 24-03-2020 25 4   Download

This thesis examines the benefits of using multi-antenna transmission in terrestrial digital video broadcasting, especially in the DVB-T2 and DVBNGH standards. The thesis extends an existing DVB-T2 simulator with a platform for running MIMO simulations. The platform is constructed in a manner that will allow it to be easily adapted to future needs.

92p son248 24-03-2020 17 1   Download

5G antenna is so compact size but has to get large bandwidth, high gain and good radiation efficiency to be able to support huge data rate for 4.0 revolution industry. In this paper, a novel 4x4 multiband Multiple Input Multiple Output (MIMO) antenna is designed. Using the semi-circle structure, the proposed antenna not only achieves wide band but also is easy to optimize operate frequencies at millimeter wave band.

8p vitunis2711 11-12-2019 31 3   Download

In this paper, a novel scheduler, termed QoS-Aware scheduling, is designed and proposed for Massive MIMO to use the channel aging to increase the sum-rate but guarantee the minimum bit rate per user to support QoS.

14p vidonut2711 08-11-2019 6 0   Download

Wireless communications is one of the most active areas of research over the past and the current decades. In fact, the demand for wireless services has been changing from the regular voice telephony services to mixed voice, data, and multimedia services over the wireless media. Since the mid-1990s, the wireless industry has been advancing at an incredible speed. For example, the 2G cellular systems (such as GSM, D-AMPS, and IS-95) have significantly improved the spectral efficiency and network capacity to support wireless telephony services....

544p gian_anh 18-10-2012 63 8   Download