i-manager's Journal on Communication Engineering and Systems (JCS)


Volume 5 Issue 1 November - January 2016 [Open Access]

Research Paper

Performance Analysis of Co-Operative Spectrum Sensing Using Optimization in Cognitive Radio

Payal Mishra* , K. Neelam Dewangan**
* PG Scholar, Department of Electronics & Telecommunication, Chhatrapati Shivaji Institute of Technology, Durg, India.
** Assistant Professor, Department of Information Technology, Chhatrapati Shivaji Institute of Technology, Durg, India.
Mishra, P., and Dewangan, N. (2016). Performance Analysis of Co-Operative Spectrum Sensing Using Optimization in Cognitive Radio. i-manager’s Journal on Communication Engineering and Systems, 5(1), 1-6. https://doi.org/10.26634/jcs.5.1.4857

Abstract

A cognitive radio system is a mechanism which allows unlicensed (cognitive) user to utilize free bands. Cognitive users detect the presence of such free bands and energy detection which is highly regarded as a prospective technique for this spectrum sensing task. The main aim is to optimize the detection performance in an efficient and implementable way and to reduce the probability of error, which mainly occurs in the wireless channel. The analysis is done under the Rayleigh fading channel. However, there exist two kinds of detection errors (i.e., miss-detection error and false-alarm error), which degrade the sensing performance severely. To overcome the entire problems in the cognitive radio network, the authors need to use an optimization algorithm, which gives the satisfactory result in the given environment. Due to its simplicity and its multi handling capabilities, Genetic Algorithm(GA) is used. The result is compared with Conventional Energy Detector and it is evident from the comparison that, GA finds better solution to the given problem.

Research Paper

Automatic Receiver Response Mail System

Divya J* , D. Jagadeesan**, G. Asha***
** Professor, Department of Computer Science & Engineering, Sreenivasa Institute of Technology & Management Studies, Chittoor, India.
*** Research Scholar, Department of Electronics and Communication Engineering, SCSVMV University, Kanchipuram, India.
Divya, J., Jagadeesan, D., and Asha, G.(2016). Automatic Receiver Response Mail System. i-manager’s Journal on Communication Engineering and Systems, 5(1), 7-12. https://doi.org/10.26634/jcs.5.1.4859

Abstract

Now-a- days e-mail usage is more. Many people pass information to their friends, relatives, workers, officials and students through e-mail. In this paper, the proposed system is about to verify that the mail is opened or not at receiver end and also to inform the sender about the mail activity that the mail is forwarded or deleted. For instance, sender wants to send the information to the receiver through mail. The receiver receives the mail information and places in to the inbox or spam folder. The sender do not know whether the receiver mail is opened or not. In this proposed receiver response mail system, once the receiver opened the mail from inbox or spam folder, the system automatically sends the mail opened information or forwarded information or deleted information mail to the sender. It is an efficient method for tracking the mail.

Research Paper

Compact Wide-Band BPF Using Short Ended UniformImpedance Resonator

Vipin Kumar Upaddhayay* , G. D. Bharti**, B.S. Rai***
* PG Scholar, Department of Electronics & Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur, India.
** Associate professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur,
*** Professor, Department of Electronics and Communication Engineering, Madan Mohan Malaviya University of Technology, Gorakhpur,
Upaddhyay, V.K., Bharti, G., and Rai, B.S. (2016). Compact Wide-Band BPF Using Short Ended Uniform Impedance Resonator. i-manager’s Journal on Communication Engineering and Systems, 5(1), 13-16. https://doi.org/10.26634/jcs.5.1.4862

Abstract

A new compact Wideband Band Pass Filter is proposed based on shorted rectangle uniform impedance resonator with additional short ended stub connected inside it. This Wideband Band Pass Filter is designed with two uniform width resonators resulting in miniaturization of filter size. It has 3dB fractional bandwidth of 94.628%. The insertion loss and return loss are found to be less than 15dB and 0.68 dB respectively in pass band. It has measured 3dB pass band of 1.68 to 4.41 GHz band. The circuit size reduced considerably and its size is 17.2×11.2 mm. This structure used the concept of short ended stub in its design which makes the filter easy and compact in size. This Wideband BPF is useful in S band like weather radar and surface chip radar and especially for communication between the space shuttle and the international space station. This Wide Band BPF is designed and fabricated.The measured and simulated result is in good agreement.

Research Paper

Design and Simulation of Microstrip Patch ArrayAntenna for 2.45 GHz

Hamsagayathri* , P. Sampath**, M. Gunavathi***
* PG Scholar, Department of Electronics and Communication Engineering, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India.
** Professor, Department of Electronics and Communication Engineering, Bannari Amman Institute of Technology, Sathyamangalam, TamilNadu, India.
*** PG Scholar, Communication Systems, Bannari Amman Institute of Technology, Sathyamangalam, Tamilnadu, India.
Hamsagayathri, P., Sampath, P., and Gunavathi, M. (2016). Design and Simulation of Microstrip Patch Array Antenna for 2.45 GHz. i-manager’s Journal on Communication Engineering and Systems, 5(1), 17-24. https://doi.org/10.26634/jcs.5.1.4863

Abstract

Breast cancer is one of most common life-threatening diseases among the world's women. Early detection of Breast cancer, aids in fast and effective treatment to save lives. Mammography, which is currently the most popular method of breast screening, has some limitations. Microstrip antennas are used as an alternative in growing medical applications. The main purpose of the project is to design a simple and cost effective conformal Microstrip Patch Antenna with dimensions of 37 mm X 28 mm using FR4 substrate for operating frequency 2.45 GHz. For enhancing the bandwidth, directivity and gain, 4x1 antenna arrays are designed in linear with corporate feeding networks. Experimental results of the proposed antenna are simulated and discussed using the ADS simulation software. The proposed antenna has a bandwidth of 65 MHz covering the frequency range 2.41-2.49 GHz, the return loss below -26 dB and antenna gain of 2.45 dB. The flexible patch antenna holds good efficiency of 87.1%. This paper proposes design patch antenna which can be applied for early Breast tumor detection in women.

Review Paper

Analysis Of Cross Phase Modulation in WDMSystem: A Review

Prachi Agrawal* , Sharad Mohan Shrivastava**, Anuja Mishra***, Pooja Sharma****, Rahul Parganiha*****
*,***-***** PG Scholar, Department of Communication Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, CG, India.
** Assistant Professor, Department of Electronics & Telecommunication, Shri Shankarachrya Technical Campus, Bhilai, CG, India.
Agrawal, P., Shrivastava, S.M., Mishra, A., Sharma, P., and Parganiha, R. (2016). Analysis Of Cross Phase Modulation in WDM System: A Review. i-manager’s Journal on Communication Engineering and Systems, 5(1), 25-31. https://doi.org/10.26634/jcs.5.1.4864

Abstract

In this review paper, the authors show a brief introduction about WDM system. Different types of nonlinearities found in optical fiber are taken into consideration among which, Cross Phase Modulation is focused. Also the Q-factor and BER at different values of the optical dispersion is analysed. Effect of Cross Phase Modulation on the optical fiber is presented by the graphs for the different values of Q-factor and BER. The intensity and timing jitter distortion caused by XPM in 100km NZDSF with channel spacing of 0.8nm is compared and effect of XPM in DQPSK modulation format is discussed. The modelling is done using a commercial optical system simulator named OptiSystem by Optiwave. The objective of this review paper is to make readers understand the key terms related to fiber nonlinearities specifically Cross Phase Modulation to help them carry out their future project work.

Review Paper

Optimization of Mach-Zehnder Modulator ForIntersatellite Communication : A Review

Pooja Sharma* , Sharad Mohan Shrivastava**, Anuja Mishra***, Prachi Agrawal****, Rahul Parganiha*****
*,***,****,***** PG Scholar, Department of Communication Engineering, Chhattisgarh Swami Vivekanand Technical University, Bhilai, CG, India.
** Assistant Professor, Department of Electronics & Telecommunication, Shri Shankarachrya Technical Campus, Bhilai, CG, India.
Sharma, P., Shrivastava, S.M., Mishra, A., Agrawal, P., and Parganiha, R. (2016). Optimization of Mach-Zehnder Modulator For Intersatellite Communication : A Review. i-manager’s Journal on Communication Engineering and Systems, 5(1), 32-38. https://doi.org/10.26634/jcs.5.1.4865

Abstract

The Objective of this review paper is to make the readers understand the key terms related to Intersatellite Optical Wireless Communication System to help them carry out their future project work.The concept of wireless communication system has paved its way in optical communication system replacing long lengthy fibers which were previously opted. This has enabled optical wireless systems to be used in free space communications as well. A network is required enabling communication between the satellites prevailing in space because of increasing number of satellites in free space. Higher data rates of Gbps can be achieved using laser communication along with greater distance offered. The communication being carried out between the satellites in space via optical wireless systems is basically termed as Intersatellite Optical Wireless Communication (IsOWC). In this review paper, Intersatellite Optical Wireless Communication (IsOWC) system modelling and simulation for performance characterization and estimation are specifically understood and discussed. The system parameters namely bit rates, receiver sensitivity and distance of LEO and GEO intersatellite links were found.The intersatellite link was designed and simulated using a known optical system simulator named OptiSystem by Optiwave.