arXiv subjects

Sourangsu Banerji

Publications and source records attributed to Sourangsu Banerji.

25 records · Page 2Linked to original sources

arXiv2014

Computer Simulation Codes for the Quine-McCluskey Method of Logic Minimization

The Quine-McCluskey method is useful in minimizing logic expressions for larger number of variables when compared with minimization by Karnaugh Map or Boolean algebra. In this paper, we have tried to put together all of the computer codes which are available on the internet, edited and modified them as well as rewritten some parts of those collected codes our self, which are used in the implementation of the Quine- McCluskey method. A brief introduction and the logic of this method are discussed following which the codes have been provided. The Quine-McCluskey Method has been implemented using computer languages like C and C++ using some amount of variations. Our effort is to list them all, so that the readers well versed in any of the particular computer language will find it easy to follow the code written in that particular language.

cs.OH↗

arXiv2014

Architectural Design of a RAM Arbiter

Standard memory modules to store (and access) data are designed for use with a single system accessing it. More complicated memory modules would be accessed through a memory controller, which are also designed for one system. For multiple systems to access a single memory module there must be some facilitation that allows them to access the memory without overriding or corrupting the access from the others. This was done with the use of a memory arbiter, which controls the flow of traffic into the memory controller. The arbiter has a set of rules to abide to in order to choose which system gets through to the memory controller. In this project, a regular RAM module is designed for use with one system. Furthermore, a memory arbiter is also designed in Verilog that allows for more than one system to use a single RAM module in a controlled and synchronized manner. The arbiter uses a fixed priority scheme to avoid starvation of the system. In addition one of the major problems associated with such systems i.e. The Address Clash Problem has been nicely tackled and solved. The design is verified in simulation and validated on a Xilinx ML605 evaluation board with a Virtex 6 FPGA.

cs.AR↗

arXiv2014

Design and Implementation of an Unmanned Vehicle using a GSM Network without Microcontrollers

In the recent past, wireless controlled vehicles had been extensively used in a lot of areas like unmanned rescue missions, military usage for unmanned combat and many others. But the major disadvantage of these wireless unmanned robots is that they typically make use of RF circuits for maneuver and control. Essentially RF circuits suffer from a lot of drawbacks such as limited frequency range i.e. working range, and limited control. To overcome such problems associated with RF control, few papers have been written, describing methods which make use of the GSM network and the DTMF function of a cell phone to control the robotic vehicle. This paper although uses the same principle technology of the GSM network and the DTMF based mobile phone but it essentially shows the construction of a circuit using only 4 bits of wireless data communication to control the motion of the vehicle without the use of any microcontroller. This improvement results in considerable reduction of circuit complexity and of manpower for software development as the circuit built using this system does not require any form of programming. Moreover, practical results obtained showed an appreciable degree of accuracy of the system and friendliness without the use of any microcontroller.

eess.SY↗

arXiv2014

Design and Implementation of an Unmanned Vehicle using a GSM Network with Microcontrollers

Now-a-days, a lot of research is being carried out in the development of USVs (Unmanned surface vehicles), UAVs (Unmanned Aerial Vehicles) etc. Now in case of USVs generally, we have seen that wireless controlled vehicles use RF circuits which suffer from many drawbacks such as limited working range, limited frequency range and limited control. Moreover shooting infrared outdoors on a bright sunny day is often problematic, since sunlight can interfere with the infrared signal. Use of a GSM network (in the form of a mobile phone, a cordless phone) for robotic control can overcome these limitations. It provides the advantages of robust control, working range as large as the coverage area of the service provider in comparison with that of an IR system, no interference with other controllers. This paper presents a Global System for Mobile Telecommunication (GSM) network based system which can be used to remotely send streams of 4 bit data for control of USVs. Furthermore, this paper describes the usage of the Dual Tone Multi-Frequency (DTMF) function of the phone, and builds a microcontroller based circuit to control the vehicle to demonstrate wireless data communication. Practical result obtained showed an appreciable degree of accuracy of the system and friendliness through the use of a microcontroller.

eess.SY↗

arXiv2014

Wi-Fi & WiMAX: A Comparative Study

Usually broadband wireless access networks are considered to be enterprise level networks providing us with more capacity as well as coverage. We have seen that in remote inaccessible areas wired networks are not at all cost effective. Wireless networking has offered us an alternative solution for such problem of information access. They have definitely changed the way people communicate and share information among themselves by overcoming problems nowadays associated with distance and location. This paper provides a comparison and technical analysis of alternatives for implementing last-mile wireless broadband services. It provides detailed technical differences between 802.11 (Wi-FI) wireless networks with 802.16 (WiMAX), a new technology that solves many of the difficulties in last-mile implementations.

cs.NI↗

arXiv2014

Upcoming Standards in Wireless Local Area Networks

Network technologies are traditionally centered on wireline solutions. Wireless broadband technologies nowadays provide unlimited broadband usage to users that have been previously offered simply to wireline users. In this paper, we discuss some of the upcoming standards of one of the emerging wireless broadband technology i.e. IEEE 802.11. The newest and the emerging standards fix technology issues or add functionality that will be expected to overcome many of the current standing problems with IEEE 802.11.

cs.NI↗

arXiv2014

On IEEE 802.11: Wireless LAN Technology

Network technologies are traditionally based on wireline solutions. But the introduction of the IEEE 802.11 standards have made a huge impact on the market such that laptops, PCs, printers, cellphones, and VoIP phones, MP3 players in our homes, in offices and even in public areas have incorporated the wireless LAN technology. Wireless broadband technologies nowadays provide unlimited broadband access to users which were previously offered only to wireline users. In this paper, we review and summarize one of the emerging wireless broadband technology i.e. IEEE 802.11,which is a set of physical layer standard for implementing wireless local area network computer communication in the 2.4,3.6,5 and 60GHz frequency band. They fix technology issues or add functionality which is expected to be required by future applications. Though some of the earlier versions of these technologies are obsolete (such as HiperLAN) now but still we have included them in this review for the sake of completeness.

cs.NI↗