Software defined radio (SDR) aims to overcome the limitation of the conventional radio by building a flexible open architecture based radio system. Functional modules of the radio system are implemented on reprogrammable/reconfigurable hardware platforms using software. So highly flexible. Useful for global roaming services as SDR is able to interoperate with different wireless protocols, incorporate new services, and upgrade to new standards. Hence for implementing a given radio scheme, we required to identify the BBBs, place them in appropriate position, replace the BBBs by the FUs and connect them through the switches. Data routing from the output of one FU to the input(s) of one or more FUs can be achieved by providing appropriate control signals to the switches which is generated by the software. Thus, by changing control signals of these switches, different communication schemes can be established. However, the BBUs that are used in most of the schemes can be made static to reduce switching delay. The signal processing functions (like adder, delay, multipliers, carrier oscillator generators etc) are computationally intensive and they exhibit spatial or temporal parallelism or both. In SDR, the signal processing function are implemented in Software by simply downloading a new program and hence it is possible to incorporate to new services. Efficient Signal processor for SDR is either a DSP processor or ASIC or FPGA. ASIC /SOC offer low power Consumption, highest
The proposed concept is implemented as a prototype and this document gives a detailed insight about the prototype. The prototype considers wired and wireless communication and the data exchanges between them. All the simulations are executed on a windows laptop.
Using the COM-5102, the SDR will transmit the radio signal, this pulg in will add associated MAC addresses and UDP headers onto the project automatically [15]. The VHDL code has values that can be changed slightly to accommodate UDP or TCP transmission. For the project, UDP headers will be used.
This paper will cover ANSI/TIA/EIA-102 standards that are to meet. Section 1 will discuss the Open Systems Intercommunication (OSI) model for communication systems. Section 2 will look at Analog to Digital Converters for transmission and reception using digital communication. Section 3 will include modulation standards. Section 4 will contain linking and Section 5 encryption standards.
Apple’s iPhone and iPad has gained a large share of the smart phone and computer tablet market. Mitchell (2011) noted that competitors have released their own versions, and almost overnight, a new technological commodity has become a competing force in the business world. Apple has introduced many innovative features and has redefined the mobile-device and computer tablet landscape forcing the competition to evolve and play catch-up in many cases (DesRosiers, 2010).
The Joint Tactical Radio Systems can be described as inexpensive radio systems that are software programmable and offer reliable, secure, data, multi-channel voice, and video communications for mobile users in the military. The tactical radio systems provide an all-inclusive, safe, and multi-channel mobile communications network ability for ground vehicles. The deliver communications networking capabilities that enable the transfer of several megabits of data per second on moving ground vehicles at the tactical edge. Consequently, the systems places total power and control of the Global Information Grid into the warfighters and take the situational awareness of network beyond the center for tactical operations (Simonsen, 2011).
The purpose of this project is to build a system that will help and address Tony Chip’s new requirements. All of the new requirements will be considered with the system architecture and it will use all of the applications that still perform after the upgrade and change. The
Over all the world there are software programmable devices for all applications for different uses and purposes. Also there are software programmable devices that are used only for networking applications, they are called Network Processors. Network Processors have evolved over the years and have a lot of different types for same and different purposes. Network Processors are used for moving data from place to another as Routing, Switching, and Bridging, providing Services as Traffic Shaping, Security, and Monitoring, also they execute programs to handle packets in a network. They are one of the most complex systems ever created by Humans. There are many types of network processors as RISC, CISC, Mainframe, and Vector processor architectures. They uses Instruction Set Architecture (ISA) that are used for design techniques for the set of processors and for implementing the instruction work flow.
International Journal of Reconfigurable and Embedded Systems (IJRES) Vol. 1, No. 2, July 2012, pp. 49~54 ISSN: 2089-4864
Abstract 1. Background 2. Microcontroller 2.1 Introduction 2.2 History 2.3 Definition of a Microcontroller 2.4 Microcontrollers vs Microprocessors 2.5 Memory Unit 2.6 Central Processing Unit 2.7 Bus 2.8 Input Output Unit 2.9 Serial Communication 2.10 Timer Unit 2.11 Watch Dog 2.12 Analog to Digital Converter 3. Introduction to 16X2 LCD Display 3.1 Pin description 3.2 DDRAM - Display Data RAM 3.3 BF -
Embedded systems are found in wide range of application areas. Originally they were used only for expensive industrial control applications, but as technology brought down the cost of dedicated processors, they began to appear in moderately expensive applications such as automobiles, communication and office equipments and television Today's embedded systems are so inexpensive that they
Mobile Networks: Mobile networks today are dominated by proprietary hardware. Having physical resource increases expenditure for the operators. Scaling of such resources may require replacement of hardware. Implementing NFV means that the hardware resource pool can be efficiently utilized based on demand. A virtualized mobile core network would also help minimize the signaling traffic on the network by grouping certain network functions together [1]. This paper will discuss more on a virtual Core network in section IV.
Since embedded system are targeted at very specific tasks this makes it much easier to optimize for the particular application than you could with general purpose computer[3].
Based on the design requirement and specifications, the system block diagram shown on Figure 2.1 is developed. This block diagram defines all the function to be performed by the system. A modular approach to project design was taken. The system is designed around an Arduino Mega2560 which is based on an Atmel2560 microprocessor.
discovered is only a mugful. I would like to acquaint myself with as much as
Nowadays most technology is becoming wireless. These inventions are making our lives much easier, and in this fast-paced world we really need it. Although some of the technological developments are just making us lazy, like the remote control. Although it makes it easy for us, some people take advantage therefore it contributes to obesity. Most of the technology has been invented for the great demand on them, it has also helped medical advances. Wireless technology just helps makes our lives run by smoother, than if we still had everything wired.