Design and Implementation of a New Architecture of a Real-Time Reconfigurable Digital Modulator (DM) Into QPSK, 8-PSK, and 16-PSK on FPGA

Abstract

One of the prerequisites of Electronic Warfare (EW) is to have the means to provide secure point-to-point wireless data and voice communications with other ground stations. New technologies are giving rise to bigger information security threats. This situation illustrates the best the urgency of reducing the development and upgrade time of EW systems. Previous works suggest that digital systems are the best candidates for this purpose and therefore form the backbone of modern Electronic Warfare. Indeed, Digital Modulation (DM) techniques are widely used in modern wireless communication systems. This is largely due to their high resistance to noise and their high transmission capacity that can be achieved through data multiplexing. In this article, a new reconfigurable architecture of a Phase Shift Keying (PSK) modulation is described. The latter can be configured in real time to produce the following modulation schemes: QPSK, 8-PSK, and 16-PSK without having to regenerate the FPGA configuration bits. This action can be done by software via programming or manually using a DIP switch. The proposed design is implemented on the Xilinx xc7k325tfbg900 FPGA using the Genesis 2 development board. The Vivado Physical Design Automation tool indicates a power consumption of 303 mW by the on-chip circuit. The experimental results are in agreement with the simulations.

FPGA based co-design of a speed fuzzy logic controller applied to an autonomous car

“…Before carrying out the hardware/software design of the proposed fuzzy controller, we have tested it by applying a car plant [26] according to our car dimensions, shown in Figure 5. It is a discrete transfer function given in (4). The sample time is equal to 0.2 s.…”

“…𝛥𝑣 𝛥𝑢 = 0.0007198z 2 +0.00217z+0.0003955 𝑧 3 -2.18z+1.487z-0.3009 (4) where u  is the control signal that is considered as throttle control and used to increase or decrease the engine driver force [26] and v  is the car speed in cm/s. Figure 4 presents the system model developed in MATLAB/Simulink environment.…”

“…This latter characterizes the high ability of functional blocks to be reconfigured statically or dynamically. As a result, these architectures are device-rich platforms suitable for the development of a wide variety of complex real-time applications [4]. They require a lot of computational and processing time and a large capacity of memory to analyze data.…”

Efficient adaptation of the Karatsuba algorithm for implementing on FPGA very large scale multipliers for cryptographic algorithms

“…By applying some basic algebra to (5), it follows ( ) = ( 0 0 ) 0 + ( 0 1 + 1 0 + 0 0 + 1 1 − ( 0 0 + 1 1 )) 1 After equaling (5) and (8), and by identification it follows:…”

“…The need to protect data and information is crucial; it can make the difference between life and death. More particularly, in the military field, winning a war relies heavily on the protection of information [1]. The use of encryption keys is one of the means used to preserve the authenticity, confidentiality, nondenial, and integrity of the data.…”