scholarly journals FPGA Acceleration for Computationally Efficient Symbol-Level Precoding in Multi-User Multi-Antenna Communication Systems

IEEE Access ◽  
2019 ◽  
Vol 7 ◽  
pp. 15509-15520 ◽  
Author(s):  
Jevgenij Krivochiza ◽  
Juan Merlano Duncan ◽  
Stefano Andrenacci ◽  
Symeon Chatzinotas ◽  
Bjorn Ottersten
Keyword(s):  
Communication Systems ◽  
Computationally Efficient ◽  
Fpga Acceleration

scholarly journals Multiscale Compact Modelling of UTC-Photodiodes Enabling Monolithic Terahertz Communication Systems Design

2021 ◽  
Vol 11 (23) ◽  
pp. 11088
Author(s):  
Djeber Guendouz ◽  
Chhandak Mukherjee ◽  
Marina Deng ◽  
Magali De Matos ◽  
Christophe Caillaud ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Communication Systems ◽  
Systems Design ◽  
Parameter Extraction ◽  
Compact Model ◽  
Data Traffic ◽  
Computationally Efficient ◽  
Continuous Increase ◽  
Communication Circuits ◽  
High Bandwidth

Due to the continuous increase in data traffic, it is becoming imperative to develop communication systems capable of meeting the throughput requirements. Monolithic Opto-Electronic Integrated Circuits (OEICs) are ideal candidates to meet these demands. With that in mind, we propose a compact and computationally efficient model for Uni-Traveling Carrier Photodiodes (UTC-PDs) which are a key component of OEICs because of their high bandwidth and RF output power. The developed compact model is compatible with existing SPICE design software, enabling the design of beyond 5G and terahertz (THz) communication circuits and systems. By introducing detailed physical equations describing, in particular, the dark current, the intrinsic series resistance, and the junction capacitance, the model accurately captures the physical characteristics of the UTC-PD. The model parameter extraction follows a scalable extraction methodology derived from that of the bipolar and CMOS technologies. A detailed description of the de-embedding process is presented. Excellent agreement between the compact model and measurements has been achieved, showing model versatility across various technologies and scalability over several geometries.

Computationally efficient adaptive MMSE receiver for synchronous MC-CDMA communication systems

2003 ◽  
Vol 39 (21) ◽  
pp. 1539 ◽  
Author(s):  
S.J. Yi ◽  
C.C. Tsimenidis ◽  
O.R. Hinton ◽  
B.S. Sharif
Keyword(s):  
Communication Systems ◽  
Computationally Efficient ◽  
Mmse Receiver

SIMULATION STUDY OF PROPAGATION OF PULSES IN OPTICAL FIBER COMMUNICATION SYSTEMS USING SOBOLEV GRADIENT AND SPLIT-STEP FOURIER METHODS

2009 ◽  
Vol 06 (01) ◽  
pp. 119-130 ◽  
Author(s):  
NAUMAN RAZA ◽  
SULTAN SIAL ◽  
SHAHID S. SIDDIQI
Keyword(s):  
Communication Systems ◽  
Optical Fiber Communication ◽  
Optical Systems ◽  
Computationally Efficient ◽  
Fiber Communication ◽  
Wide Range ◽  
Sobolev Gradients ◽  
Sobolev Gradient ◽  
Gradient Technique ◽  
The One

The one-dimensional nonlinear Schrödinger equation (NLSE) has a wide range of applications in nonlinear optical and laser physics. The design of new optical systems requires analysis of the propagation characteristics of pulses in the fiber media. In this paper, the Sobolev gradient technique has been used for numerical solution of the NLSE. We show that gradients in a suitably chosen Sobolev space (Sobolev gradients) can be used in finite difference settings in a computationally efficient way to approximate the profile of a pulse given by the NLSE.

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