Performance Analysis of Carrier-Aggregated Multi-Antenna 4×4 MIMO LTE-A Fronthaul by Spatial Multiplexing on Multicore Fiber

© 2018 IEEE. Personal use of this material is permitted. Permissíon from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertisíng or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.[EN] In this paper,we experimentally propose and evaluate the performance of multiantenna LTE-Advanced (LTE-A) systems implementing multiple-input-multiple-output (MIMO) space división multiplexing on multicore fiber, compared to single-antenna single-antenna system (SISO) transmissions. Fully standard 3GPP LTE-A cellular signals are transmitted with MIMO and carrier aggregation in radio-over-fiber over a four-core fiber in different configurations. The processing capabilities of in-built 3GPP MIMO processing are evaluated experimentally in two-antenna and four-antenna LTE-A configurations and compared with single-antenna SISO performance. The robustness of 3GPP MIMO processing is analyzed over different optical paths in a four-core fiber and the optical power margin available between the four optical paths is calculated for each configuration. Finally, the transmission performance of carrier-aggregated LTE-A signals is evaluated in the four-antenna system implementing 4×4 MIMO spatial multiplexing with different carrier separation and center frequency configurations, including regulated cellular frequencies of frequency division duplex bands 7 and 20.This work was supported in part by Spain National Plan MINECO/FEDER UE TEC2015-70858-C2-1-R XCORE and RTC-2014-2232-3 HIDRASENSE. The work of M. Morant was supported by UPV postdoc PAID-10-16 Program.Morant, M.; Llorente, R. (2018). Performance Analysis of Carrier-Aggregated Multi-Antenna 4×4 MIMO LTE-A Fronthaul by Spatial Multiplexing on Multicore Fiber. Journal of Lightwave Technology. 36(2):594-600. https://doi.org/10.1109/JLT.2017.2786582S59460036

he Study and Analysis of Effect of Multi-Antenna Techniques on LTE network with Different Bandwidth Configurations in the Downlink

Long Term Evolution (LTE) system adapts advanced Multiple Input Multiple Output (MIMO) antenna techniques on both uplink and downlink to achieve high peak data rates and higher system throughput. This enables LTE to support multimedia applications beyond web browsing and voice, which demands higher bandwidth configurations. LTE employs Orthogonal Frequency Division Multiple Access (OFDMA) in downlink to support spectrum flexibility in order to use upto 20MHz system bandwidth to improve the system throughput and robustness. Therefore the combined study of multi-antenna techniques and spectrum flexibility usage on the performance of LTE system becomes vital. Hence in this paper, an attempt has been made to evaluate the performance of different multi-antenna techniques with various system bandwidth configurations from 1.4MHz to 20MHz using QualNet 5.2 network simulator. The multi-antenna techniques considered for performance evaluation are Single Input Single Output (SISO), Multiple Input Single Output (MISO) and Multiple Input Multiple Output (MIMO). The performance metrics such as aggregate bytes received, average throughput, average delay and average jitter are considered for simulation study

The Study and Analysis of Effect of Multi- Antenna Techniques on LTE network with Different Bandwidth Configurations in the Downlink

Long Term Evolution (LTE) system adapts advanced Multiple Input Multiple Output (MIMO) antenna techniques on both uplink and downlink to achieve high peak data rates and higher system throughput. This enables LTE to support multimedia applications beyond web browsing and voice, which demands higher bandwidth configurations. LTE employs Orthogonal Frequency Division Multiple Access (OFDMA) in downlink to support spectrum flexibility in order to use upto 20MHz system bandwidth to improve the system throughput and robustness. Therefore the combined study of multi-antenna techniques and spectrum flexibility usage on the performance of LTE system becomes vital. Hence in this paper, an attempt has been made to evaluate the performance of different multi-antenna techniques with various system bandwidth configurations from 1.4MHz to 20MHz using QualNet 5.2 network simulator. The multi-antenna techniques considered for performance evaluation are Single Input Single Output (SISO), Multiple Input Single Output (MISO) and Multiple Input Multiple Output (MIMO). The performance metrics such as aggregate bytes received, average throughput, average delay and average jitter are considered for simulation study

MIMO LTE Vehicular Antennas on 3D Printed Cylindrical Forms

A multi-band antenna suitable for Long-term Evolution (LTE) is shaped around a 3D printed cylindrical form, and arranged in a MIMO configuration. The antenna is based on a planar wideband monopole radiator with an additional resonator for the LTE700 frequency band. Conforming the antenna onto a cylindrical shape reduces its length while keeping performance. It also reduces the space used by the MIMO antenna system. Furthermore, the plastic cylinder improves the mechanical strength of the supporting substrate for the radiating element. The aim is to study the potential of additive manufacturing (AM) of substrates for the development of conformal vehicular antenna. Two antennas have been fabricated, one etched on a copper clad Mylar substrate, and a second painted directly onto the cylindrical form. The two antennas have been measured and the results are compared. Two copper based antennas have been tested in a MIMO configuration. The antennas successfully operate at all LTE and mobile frequency bands. Finite different time domain simulations compare well with measurements

A comparison of MIMO antenna efficiency measurements performed in Anechoic Chamber and Reverberation Chamber

Multiple-input-multiple-output (MIMO) antenna will play a key role in the development of fifth generation (5G) wireless mobile communication systems due to their performance-enhancement capability in multipath environment. Antenna radiation efficiency is an important parameter for MIMO antenna system. In this paper, we present a comparison of MIMO antenna efficiency measurements performed in Anechoic Chamber (AC) and Reverberation Chamber (RC) at the UK National Physical Laboratory. Two commercial available directional dual polarized full LTE band MIMO antennas were measured both in AC and RC between 1 GHz and 3 GHz.Comment: 85th Microwave Measurement Conference (ARFTG 2015

Large-Scale MIMO Detection for 3GPP LTE: Algorithms and FPGA Implementations

Large-scale (or massive) multiple-input multiple-output (MIMO) is expected to be one of the key technologies in next-generation multi-user cellular systems, based on the upcoming 3GPP LTE Release 12 standard, for example. In this work, we propose - to the best of our knowledge - the first VLSI design enabling high-throughput data detection in single-carrier frequency-division multiple access (SC-FDMA)-based large-scale MIMO systems. We propose a new approximate matrix inversion algorithm relying on a Neumann series expansion, which substantially reduces the complexity of linear data detection. We analyze the associated error, and we compare its performance and complexity to those of an exact linear detector. We present corresponding VLSI architectures, which perform exact and approximate soft-output detection for large-scale MIMO systems with various antenna/user configurations. Reference implementation results for a Xilinx Virtex-7 XC7VX980T FPGA show that our designs are able to achieve more than 600 Mb/s for a 128 antenna, 8 user 3GPP LTE-based large-scale MIMO system. We finally provide a performance/complexity trade-off comparison using the presented FPGA designs, which reveals that the detector circuit of choice is determined by the ratio between BS antennas and users, as well as the desired error-rate performance.Comment: To appear in the IEEE Journal of Selected Topics in Signal Processin

PERANCANGAN DAN REALISASI ANTENA ARRAY MIMO 3x3 PATCH RECTANGULAR BERBASIS MICROSTRIP UNTUK FREKUENSI 2,3-2,39 GHZ

ABSTRAKSI: LTE yaitu Long Term Evolution adalah alternatif sistem jaringan komunikasi seluler 4G pita lebar dengan variasi kecepatan data sangat tinggi. Pada Transmitter dan receiver sistem komunikasi, termasuk sebuah system LTE terdapat perangkat antenna untuk mentransmisikan dan menerima sinyal. Kendala yang dihadapi adalah multipath fading yang menyebabkan fluktuasi sinyal di penerima. Untuk mengatasi multipath fading dan pencapaian bit rate yang tinggi, dirancang antenna dengan teknologi MIMO ( Multiple Input Multiple Output).Sistem MIMO merupakan system komunikasi yang menggunakan multi antenna baik di sisi transmitter maupun sisi receiver.Pada tugas akhir ini telah direalisasikan Antena susunan MIMO 3 catuan menggunakan teknologi mikrostrip. Antena adalah perangkat bersifat pasif sebagai media penghubung antara gelombang terbimbing dan gelombang tidak terbimbing. Dengan teknologi MIMO 3x3, antenna disusun/ array dengan 3 catuan yang bekerja pada frekuensi yang sama. Dimana masing-masing susunan diharapkan memiliki gain > 6 dBi. Antena ini bekerja pada frekuensi 2300-2390 Mhz yang dapat diaplikasikan pada blok sistem LTE untuk CPE (customer promises equipment) indoor.Realisasi antenna ini telah diuji melalui pengukuran dengan hasil gain pada port 1,2 dan 3 adalah 5.3dBi ,5.53 dBi dan 5.8dBi, kopling antar port atau catuan adalah 31-57 dB. VSWR yang telah dicapai port 1,2 dan 3 adalah 1.13,1.4, 1.21 dengan bandwidth antara 113-130 Mhz. Antena ini telah disimulasikan menggunakan software Ansoft.Kata Kunci : Antena, Mikrostrip, Array, MIMO, LTEABSTRACT: LTE ( Long Term Evolution ) is an alternative system of mobile communication network 4 generation with mobile broadband and very high data speeds . Transmitter and receiver on communication systems, including an LTE system there are antennaa for transmitting and receiving signals. The problem is multipath fading that causes fluctuations in the signal at the receiver. To overcome multipath fading and achieving a very high bit rate, designed antennas with MIMO technology (Multiple Input Multiple Output). MIMO system is a communication system that uses multiple antennas at both the transmitter and receiver sides.From This final project has been realized 3x3 MIMO array antenna using microstrip technology. Antenna is a passive device as a media liaison between the guided wave and the unnguided wave . With 3x3 MIMO, 3 antennas that works on the same frequency, arranged with a certain distance and supplied with 3 different ration. Where each arrangement is expected to have a gain> 6 dBi. This antenna works on the frequency 2300-2390 MHz that can be applied to the LTE system block for CPE (customer promises equipment) indoors.The realization of this antenna has been tested by measuring the results of gain at port 1, 2, and 3 are 5.3dBi ,5.53 dBi dan 5.8dBi, isolation between ports was 31-57 dB. Achieved VSWR 1.13,1.4, 1.21 for pert 1,2 and 3. There were 113-130 Mhz of bandwidth. This antenna had been simulated using Ansoft 13 software.Keyword: Antenna, Microstrip, Array, MIMO, LT

Throughput Multiplexing Efficiency for MIMO Antenna Characterization

The antenna-channel effects on multiple-input-multiple-output (MIMO) throughput are characterized in terms of spatial multiplexing (SM) efficiency. In order to show the antenna effects explicitly, the SM efficiency of an MIMO system (with imperfect transmit antennas) is derived analytically at high signal-to-noise ratio (SNR) regime. It is shown that correlation and power imbalance affect the throughput adversely (as expected) and independently. Although derived for imperfect transmit antennas, the close-form SM efficiency formula turns out to be accurate for 2 x 2 MIMO systems with imperfect receive antennas as well. It is also shown that the derived SM efficiency formula even reasonably predicts the measured SM efficiency of a Long Term Evolution (LTE) system