Flexible and Reconfigurable OFDM Implementation in DSP Platform for Various Purposes and Applications

• Published in: Sensors (Basel, Switzerland) Vol. 24; no. 9; p. 2732
• Main Author: Chronopoulos, Spyridon K
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 01-05-2024
• Subjects: civil; Communications equipment; Design; digital signal processor; Digital signal processors; DSP; Embedded systems; Flexibility; military; OFDM; orthogonal frequency division multiplexing; Semiconductor industry; Software; Telecommunications systems; Transmitters; United States; United States > US; Texas; DSP; digital signal processor; orthogonal frequency division multiplexing; OFDM; application; civil; military; UAV; unmanned
• ISSN: 1424-8220; 1424-8220
• DOI: 10.3390/s24092732

In the modern technological era of sophisticated applications and high-quality communications, a platform of clever strategy and quickly updated systems is needed. It should be capable of withstanding the fastest emerging problems like signal attenuation and hostile actions intended to harm the whole network. The main contributions of this work are the production of an OFDM system (with low cost) that can sustain high-speed communications and be easily adjusted with new integrated code while exhibiting the feasibility of implementing a transmitter-receiver system in the same DSP and demonstrating the holistic approach with the qualitative integration of such an architecture in a warfare scenario. Specifically, in this research, the point of view is toward three facts. The first is to show a method of quick self-checking the operational status of a digital signal processor (DSP) platform and then the pedagogical issues of how to fast check and implement an updated code inside DSPs through simple schematics. The second point is to present the prototype system that can easily be programmed using a graphical user interface (GUI) and can change its properties (such as the transmitted modulated sinusoids-orthogonal frequency division multiplexing subcarriers). Alongside the presentation, the measurements are presented and discussed. These were acquired with the use of an oscilloscope and spectrum analyzer. The third point is to qualitatively show the application of such a system inside a modern warfare environment and to recommend various potential system responses according to the development of such a platform of reconfigurable implemented OFDM systems. The implementation was performed for two types of systems: (1) transmitter and (2) transmitter-receiver system. Notably, the system acts quickly with a delay of about 1 msec in the case of transmitting and receiving in the same DSP, suggesting excellent future results under real conditions.