scholarly journals Analysis high gain waveguide slot antenna 2.3 GHz for Long Term Evolution-Time Division Duplex (LTE-TDD)

2020 ◽  
Vol 850 ◽  
pp. 012054
Author(s):  
N F A Hakim ◽  
T Hariyadi ◽  
A B Pantjawati ◽  
B Mulyanti
Keyword(s):  
High Gain ◽  
Long Term Evolution ◽  
Slot Antenna ◽  
Time Division Duplex ◽  
Waveguide Slot ◽  
Evolution Time ◽  
Term Evolution ◽  
Waveguide Slot Antenna ◽  
Time Division

scholarly journals Desain dan Implementasi Duplekser dengan Metoda Pseudo-Interdigital untuk Uplink dan Downlink LTE

2016 ◽  
Vol 13 (2) ◽  
pp. 73
Author(s):  
Enceng Sulaeman ◽  
Yaya Sulaeman ◽  
Asep Yudi Hercuadi
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Bandpass Filter ◽  
Long Term Evolution ◽  
Full Duplex ◽  
Frequency Division ◽  
Time Division Duplex ◽  
Term Evolution ◽  
Time Division

Duplekser merupakan perangkat yang dapat mengisolasi receiver dari transmitter saat keduanya saling berbagi antena yang sama, digunakan agar komunikasi bisa berjalan secara full duplex. Ada dua metode transmisi duplex yaitu frequency division duplex (FDD) dan time division duplex (TDD). FDD merupakan teknik duplex yang menggunakan dua frekuensi yang berbeda untuk melakukan komunikasi dalam dua arah, sedangkan TDD menggunakan frekuensi tunggal dan frekuensi tersebut digunakan oleh semua kanal untuk melakukan pengiriman dan penerimaan data. Gabungan dua bandpass filter dengan metoda pseudo-interdigital untuk aplikasi LTE (long term evolution). Metode ini lebih unggul dibandingkan duplekser dengan metoda hybrid. Duplekser bekerja pada FDD LTE band ke-7 yaitu frekuensi uplink 2500-2570 MHz dan downlink 2620-2690 MHz. Dari hasil pengukuran diperoleh sebagai berikut: nilai frekuensi center pada uplink 2639 MHz dan pada downlink 2659 MHz, insertion loss pada uplink 1,561 dB dan downlink 1,74 dB, bandwidth ±70 MHz, isolasi 23,03 dB, serta nilai return loss 23,5 dB pada uplink dan downlink 23,45 dB.

Broadband RCS reduction and high gain waveguide slot antenna with orthogonal array of polarisation‐dependent AMC

2013 ◽  
Vol 49 (21) ◽  
pp. 1312-1313 ◽  
Author(s):  
Yi Zhao ◽  
Xiang‐yu Cao ◽  
Jun Gao ◽  
Wen‐qiang Li
Keyword(s):  
Orthogonal Array ◽  
High Gain ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

scholarly journals High Gain Ku-Band Substrate Integrated Waveguide Slot Antenna Arrayru_RU

2015 ◽  
Vol 8 (3) ◽  
pp. 319-323
Author(s):  
Konstantin V. Lemberg ◽  
◽  
Oleg A. Nazarov ◽  
Vasiliy S. Panko ◽  
Yury P. Salomatov ◽  
...  
Keyword(s):  
High Gain ◽  
Slot Antenna ◽  
Substrate Integrated Waveguide ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna ◽  
Ku Band

scholarly journals Rendimiento de la técnica de acceso múltiple no ortogonal (NOMA) en un sistema de comunicación móvil Long-Term Evolution (LTE)

2020 ◽  
Vol 3 (1) ◽  
pp. 62-76
Keyword(s):  
Long Term Evolution ◽  
Frequency Division Multiplexing ◽  
Third Generation ◽  
Frequency Division ◽  
Time Division Multiplexing ◽  
Term Evolution ◽  
Time Division ◽  
Third Generation Partnership Project

La creciente demanda de datos a través de las redes móviles y la búsqueda de servicios más eficientes por parte de los usuarios han inducido a la generación de nuevas técnicas que incrementen la eficiencia espectral. El acceso múltiple no-ortogonal (NOMA) es una de las técnicas que están siendo evaluadas dentro del 3GPP (Third Generation Partnership Project), esta proporciona servicios a múltiples usuarios mediante multiplexación en potencia. Esta investigación evalúa el rendimiento de NOMA en sistemas LTE (Long Term Evolution) mediante simulaciones de capa física, en relación con las tecnologías de acceso múltiple ortogonales convencionales TDM (Time Division Multiplexing) y FDM (Frequency Division Multiplexing). Se compararán, además, las ganancias obtenidas, con las publicadas en la bibliografía de Advanced Television Systems Committee(ATSC) 3.0. Los resultados demuestran que NOMA es mejor que TDM en los casos que se utilice una tasa baja en el receptor móvil y una tasa media en el receptor fijo, demostrando ganancias de 3.35 y 0.25 respectivamente.

scholarly journals Performance analysis of a novel method for fast handovers in TDD and FDD for long term evolution

2018 ◽  
Vol 7 (1.9) ◽  
pp. 115
Author(s):  
G K.Venkatesh ◽  
P V.Rao
Keyword(s):  
Mobile Network ◽  
Wireless Channel ◽  
Access Time ◽  
Wireless Link ◽  
Time Division Duplex ◽  
Handover Delay ◽  
Term Evolution ◽  
Time Division

The LTE Long Term Evolution highly developed Technology, Handover is the essential function of the mobility of user in cellular networks in Time Division Duplex as well as Frequency Division Duplex. Handover is one of the essential that can affect the [QoS] Quality of Service with Capacity of Mobile Broadband Networks. Within mobile cellular network communication systems, a (spectrum) limited shared resource needs to be shared with all the users, so full duplex communication is achieved. This paper involves studying diverse Hand over delay parameters and also focus on reducing “Hard Handover delay” by minimizing interruption time, activation time, wireless channel accesses time as well as the wireless link transmission delay. Technique is developed in order to reduce the handover delay time in Time Division Duplex network which too reduces the wireless channel access time and the wireless link transmission delay. A novel handover algorithm is developed which would decreases the handover delay time and access time inside mobile network environment.Additional work may be conceded on to obtain enhanced performance and Quality of service in Time Division Duplex mobile network.

scholarly journals Design of high-gain broadband low-RCS waveguide slot antenna

2014 ◽  
Vol 63 (3) ◽  
pp. 034101
Author(s):  
Zhao Yi ◽  
Cao Xiang-Yu ◽  
Zhang Di ◽  
Yao Xu ◽  
Li Si-Jia ◽  
...  
Keyword(s):  
High Gain ◽  
Slot Antenna ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna

scholarly journals A High-gain and Low-scattering Waveguide Slot Antenna of Artificial Magnetic Conductor Octagonal Ring Arrangement

2016 ◽  
Vol 25 (1) ◽  
pp. 46-52 ◽  
Author(s):  
X. Liu ◽  
J. Gao ◽  
X. Y. Cao ◽  
Y. Zhao ◽  
W. Q. Li ◽  
...  
Keyword(s):  
High Gain ◽  
Slot Antenna ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Waveguide Slot ◽  
Waveguide Slot Antenna
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