scholarly journals QPSK MMW Wireless Communication System Based On p-i-n InGaAs Photomixer

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1182
Author(s):  
Asemahegn Wudu ◽  
Daniel Rozban ◽  
Amir Abramovich
Keyword(s):  
Wireless Communication ◽  
Fiber Optics ◽  
Horn Antenna ◽  
High Data Rate ◽  
Communication Link ◽  
High Data ◽  
W Band ◽  
Increasing Demand ◽  
Security Surveillance ◽  
Vector Signal

Millimeter-wave (MMW) frequencies (30–300 GHz), located between the microwave and infrared (IR), are promising solutions for the increasing demand of high data rate applications, UHD multimedia, HD gaming, security, surveillance, and the emergence of 5G Internet of Things (IoT). In this article, we experimentally demonstrated MMW wireless communication link using InGaAs p-i-n photomixer and commercially available telecom components at W-band (75–110 GHz). The photomixer was excited by two 1.5 µm lasers via standard telecom fiber optics, to generate frequency difference at W-band. QPSK modulated signal transmitted by the photomixer and received horn antenna integrated MMW mixer and analyzed using a spectrum analyzer and Vector Signal Analyzer (VSA) software.

scholarly journals Antennas and Propagation Aspects for Emerging Wireless Communication Technologies

Electronics ◽  
2021 ◽  
Vol 10 (8) ◽  
pp. 964
Author(s):  
Dimitra I. Kaklamani ◽  
Athanasios D. Panagopoulos ◽  
Panagiotis K. Gkonis
Keyword(s):  
Wireless Networks ◽  
Wireless Communication ◽  
Communication Technologies ◽  
High Data Rate ◽  
Multimedia Content ◽  
Broadband Wireless ◽  
High Data ◽  
Design And Implementation ◽  
Increasing Demand ◽  
Propagation Aspects

The increasing demand for high data rate applications and the delivery of zero-latency multimedia content drives technological evolutions towards the design and implementation of next-generation broadband wireless networks [...]

scholarly journals Integrated approach for efficient power consumption and resource allocation in MIMO-OFDMA

2020 ◽  
Vol 10 (2) ◽  
pp. 2069
Author(s):  
Archana B. ◽  
T. P. Surekha
Keyword(s):  
Resource Allocation ◽  
Performance Analysis ◽  
Wireless Communication ◽  
Power Consumption ◽  
Data Rate ◽  
High Data Rate ◽  
Smart Devices ◽  
Ofdma System ◽  
High Data ◽  
Redundant Data

The growing interest towards wireless communication advancement with smart devices has provided the desired throughput of wireless communication mechanisms. But, attaining high-speed data packets amenities is the biggest issue in different multimedia applications. Recently, OFDM has come up with the useful features for wireless communication however it faces interference issues at carrier level (intercarrier interferences). To resolve these interference issues in OFDM, various existing mechanisms were utilized cyclic prefix, but it leads to redundancy in transmitted data. Also, the transmission of this redundant data can take some more power and bandwidth. All these limitations factors can be removed from a parallel cancellation mechanism. The integration of parallel cancellation and Convolution Viterbi encoding and decoding in MIMO-OFDMA will be an effective solution to have high data rate which also associations with the benefits of both the architectures of MIMO and OFDMA modulation approaches. This paper deals with this integrated mechanism for efficient resource allocation and power consumption. For performance analysis, MIMO-OFDMA system is analyzed with three different approaches likeMIMO-OFDM system without parallel cancellation (MIMO-OFDMA-WPC), MIMO-OFDMA System with parallel cancellation (MIMO-OFDMA-PC) and proposed IMO-OFDMA system with parallel cancellation and Convolution Viterbi encoding/decoding (pMIMO-OFDMA-PC &CVed) for 4x4 transmitter and receiver. Through performance analysis, it is found that the proposed system achieved better resource allocation (bandwidth) with high data rate by minimized BER rate and achieved least power consumption with least BER.

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