scholarly journals Towards 5G: A Photonic Based Millimeter Wave Signal Generation for Applying in 5G Access Fronthaul

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
S. E. Alavi ◽  
M. R. K. Soltanian ◽  
I. S. Amiri ◽  
M. Khalily ◽  
A. S. M. Supa’at ◽  
...  
Keyword(s):  
Millimeter Wave ◽  
Data Transmission ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Small Cells ◽  
Total System ◽  
60 Ghz ◽  
Wave Signal ◽  
Rf Signals ◽  
5 Ghz

Abstract 5G communications require a multi Gb/s data transmission in its small cells. For this purpose millimeter wave (mm-wave) RF signals are the best solutions to be utilized for high speed data transmission. Generation of these high frequency RF signals is challenging in electrical domain therefore photonic generation of these signals is more studied. In this work, a photonic based simple and robust method for generating millimeter waves applicable in 5G access fronthaul is presented. Besides generating of the mm-wave signal in the 60 GHz frequency band the radio over fiber (RoF) system for transmission of orthogonal frequency division multiplexing (OFDM) with 5 GHz bandwidth is presented. For the purpose of wireless transmission for 5G application the required antenna is designed and developed. The total system performance in one small cell was studied and the error vector magnitude (EVM) of the system was evaluated.

scholarly journals Strategic Control of 60 GHz Millimeter-Wave High-Speed Wireless Links for Distributed Virtual Reality Platforms

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Joongheon Kim ◽  
Jae-Jin Lee ◽  
Woojoo Lee
Keyword(s):  
Virtual Reality ◽  
Power Allocation ◽  
Millimeter Wave ◽  
Data Transmission ◽  
Data Center ◽  
High Speed ◽  
Average Energy ◽  
Wireless Transmission ◽  
60 Ghz ◽  
Strategic Control

This paper discusses the stochastic and strategic control of 60 GHz millimeter-wave (mmWave) wireless transmission for distributed and mobile virtual reality (VR) applications. In VR scenarios, establishing wireless connection between VR data-center (called VR server (VRS)) and head-mounted VR device (called VRD) allows various mobile services. Consequently, utilizing wireless technologies is obviously beneficial in VR applications. In order to transmit massive VR data, the 60 GHz mmWave wireless technology is considered in this research. However, transmitting the maximum amount of data introduces maximum power consumption in transceivers. Therefore, this paper proposes a dynamic/adaptive algorithm that can control the power allocation in the 60 GHz mmWave transceivers. The proposed algorithm dynamically controls the power allocation in order to achieve time-average energy-efficiency for VR data transmission over 60 GHz mmWave channels while preserving queue stabilization. The simulation results show that the proposed algorithm presents desired performance.

Alternative Wired and 60-GHz Wireless Full Duplex Access Based on a Polarization Orthogonal Dual-Tone Optical Millimeter-Wave Signal

2015 ◽  
Vol 34 (5-6) ◽  
pp. 217-229
Author(s):  
Jianxin Ma ◽  
Ruijiao Zhang ◽  
Junjie Zhang ◽  
Xiangjun Xin
Keyword(s):  
Millimeter Wave ◽  
Full Duplex ◽  
60 Ghz ◽  
Wave Signal

scholarly journals 3D Spatial Reuse of Multi-Millimeter-Wave Spectra by Ultra-Dense In-Building Small Cells for Spectral and Energy Efficiencies of Future 6G Mobile Networks

Energies ◽  
2020 ◽  
Vol 13 (7) ◽  
pp. 1748 ◽  
Author(s):  
Rony Kumer Saha
Keyword(s):  
Millimeter Wave ◽  
Mobile Networks ◽  
Three Dimensional ◽  
Frequency Reuse ◽  
System Level ◽  
Small Cells ◽  
Spatial Reuse ◽  
60 Ghz ◽  
Spectrum Utilization ◽  
Sixth Generation

The sixth-generation (6G) mobile networks are expected to operate at a higher frequency to achieve a wider bandwidth and to enhance the frequency reuse efficiency for improved spectrum utilization. In this regard, three-dimensional (3D) spatial reuse of millimeter-wave (mmWave) spectra by in-building small cells is considered an effective technique. In contrast to previous works exploiting microwave spectra, in this paper, we present a technique for the 3D spatial reuse of 28 and 60 GHz mmWave spectra by in-building small cells, each enabled with dual transceivers operating at 28 and 60 GHz bands, to enhance frequency reuse efficiency and achieve the expected spectral efficiency (SE) and energy efficiency (EE) requirements for 6G mobile networks. In doing so, we first present an analytical model for the 28 GHz mmWave spectrum to characterize co-channel interference (CCI) and deduce a minimum distance between co-channel small cells at both intra- and inter-floor levels in a multistory building. Using minimum distances at both intra- and inter-floor levels, we find the optimal 3D cluster size for small cells and define the corresponding 3D spatial reuse factor, such that the entire 28 and 60 GHz spectra can be reused by each 3D cluster in each building. Considering a system architecture where outdoor macrocells and picocells operate in the 2 GHz microwave spectrum, we derive system-level average capacity, SE, and EE values, as well as develop an algorithm for the proposed technique. With extensive numerical and simulation results, we show the impacts of 3D spatial reuse of multi-mmWave spectra by small cells in each building and the number of buildings per macrocell on the average SE and EE performances. Finally, it is shown that the proposed technique can satisfy the expected average SE and EE requirements for 6G mobile networks.

Low-cost analog fiber optic links for in-house distribution of millimeter-wave signals

2011 ◽  
Vol 3 (2) ◽  
pp. 231-236 ◽  
Author(s):  
Friederike Brendel ◽  
Julien Poëtte ◽  
Béatrice Cabon ◽  
Frédéric van Dijk
Keyword(s):  
Millimeter Wave ◽  
Orthogonal Frequency Division Multiplexing ◽  
Fiber Optic ◽  
Low Cost ◽  
Ultra Wideband ◽  
60 Ghz ◽  
Error Vector Magnitude ◽  
Ieee 802.11A ◽  
Data Rates ◽  
Vector Magnitude

In this article, analog fiber optic links (radio-over-fiber, RoF, links) are presented as a flexible, low-cost solution for in-house distribution of millimeter-wave (mmw) signals. Mode-locked laser diodes (MLLD) serve as inexpensive mmw sources for the downlink distribution of mmw signals across an optical fiber link. We compare the robustness of direct and external RF modulation for such MLLD-based RoF systems, whereas the error vector magnitude (EVM) of the received symbols serves as a figure of merit. On the eve of 60 GHz WLAN standardization, we experimentally investigate the transmission of narrowband WLAN (IEEE 802.11a) signals in the millimetric range at moderate data rates. We also demonstrate broadband transmission of multi-band orthogonal frequency-division multiplexing (MB-OFDM) ultra-wideband (UWB) european computer manufacturers association (ECMA 368) signals in the 60 GHz band for data rates of up to 480 Mbps.

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