Researches in microwave photonics based packages for millimeter wave system with wide bandwidth and large dynamic range

2016 ◽  
Vol 9 (2) ◽  
pp. 186-193
Author(s):  
Xiaoping Zheng ◽  
Shangyuan Li ◽  
Hanyi Zhang ◽  
Bingkun Zhou
Keyword(s):  
Millimeter Wave ◽  
Dynamic Range ◽  
Microwave Photonics ◽  
Wave System ◽  
Large Dynamic Range ◽  
Wide Bandwidth

Analysis of Optimum Precoding schemes in Millimeter Wave System

2020 ◽  
Vol 13 ◽  
Author(s):  
Divya Singh ◽  
Aasheesh Shukla
Keyword(s):  
Power Consumption ◽  
Millimeter Wave ◽  
Spectral Efficiency ◽  
Phase Shifter ◽  
Phase Shifters ◽  
Achievable Rate ◽  
Wave System ◽  
Digital To Analog Converter ◽  
Hybrid Precoding ◽  
Analog Converter

Background : Millimeter wave technology is the emerging technology in wireless communication due to increased demand for data traffic and its numerous advantages however it suffers from severe attenuation. To mitigate this attenuation, phased antenna arrays are used for unidirectional power distribution. An initial access is needed to make a connection between the base station and users in millimeter wave system. The high complexity and cost can be mitigated by the use of hybrid precoding schemes. Hybrid precoding techniques are developed to reduce the complexity, power consumption and cost by using phase shifters in place of converters. The use of phase shifters also increases the spectral efficiency. Objective: Analysis of Optimum Precoding schemes in Millimeter Wave System. Method: In this paper, the suitability of existing hybrid precoding solutions are explored on the basis of the different algorithms and the architecture to increase the average achievable rate. Previous work done in hybrid precoding is also compared on the basis of the resolution of the phase shifter and digital to analog converter. Results: A comparison of the previous work is done on the basis of different parameters like the resolution of phase shifters, digital to analog converter, amount of power consumption and spectral efficiency. Table 2 shows the average achievable rate of different algorithms at SNR= 0 dB and 5 dB. Table 3 also compares the performance achieved by the hybrid precoder in the fully connected structure with two existing approaches, dynamic subarray structure with and without switch and sub connected or partially connected structure. Table 4 gives the comparative analysis of hybrid precoding with the different resolutions of the phase shifter and DAC. Conclusion: In this paper, some available literature is reviewed and summarized about hybrid precoding in millimeter wave communication. Current solutions of hybrid precoding are also reviewed and compared in terms of their efficiency, power consumption, and effectiveness. The limitations of the existing hybrid precoding algorithms are the selection of group and resolution of phase shifters. The mm wave massive MIMO is only feasible due to hybrid precoding.

scholarly journals Research on Beamforming Algorithm of Millimeter Wave System Based on Mobility of Network Vehicles

2021 ◽  
Vol 1939 (1) ◽  
pp. 012106
Author(s):  
Zhu Qinghua ◽  
Chang Ying ◽  
Shi Junfeng ◽  
Zhao Jingya ◽  
Liu Yong
Keyword(s):  
Millimeter Wave ◽  
Wave System ◽  
Beamforming Algorithm

Large dynamic range wavefront control of micromachined deformable membrane mirrors

2005 ◽  
Author(s):  
David V. Wick ◽  
Don M. Payne ◽  
Ty Martinez ◽  
Sergio R. Restaino
Keyword(s):  
Dynamic Range ◽  
Large Dynamic Range ◽  
Wavefront Control ◽  
Deformable Membrane ◽  
Membrane Mirrors

Fast Gate Leakage Current Monitor With Large Dynamic Range

2021 ◽  
pp. 1-1
Author(s):  
Kushagra Bhatheja ◽  
Xiankun Jin ◽  
Matthew Strong ◽  
Degang Chen
Keyword(s):  
Leakage Current ◽  
Dynamic Range ◽  
Gate Leakage Current ◽  
Gate Leakage ◽  
Large Dynamic Range

scholarly journals Optofluidic laser for dual-mode sensitive biomolecular detection with a large dynamic range

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
Xiang Wu ◽  
Maung Kyaw Khaing Oo ◽  
Karthik Reddy ◽  
Qiushu Chen ◽  
Yuze Sun ◽  
...  
Keyword(s):  
Dynamic Range ◽  
Large Dynamic Range ◽  
Dual Mode ◽  
Biomolecular Detection

A large dynamic range CMOS readout circuit for MEMS vibratory gyroscope

2008 ◽  
Author(s):  
Chong Zhang ◽  
Tao Yin ◽  
Qi-song Wu ◽  
Hai-gang Yang
Keyword(s):  
Dynamic Range ◽  
Readout Circuit ◽  
Large Dynamic Range ◽  
Vibratory Gyroscope
Sign in / Sign up

Export Citation Format

Share Document