iosr-JECE   Volume-11 ~ Issue-1 ~ Jan-Feb 2016

Abstract: WSN is wireless sensor network which consist of numbers of nodes. Transceiver has main role in WSN node. Transceiver consists of both transmitter as well as receiver. Power amplifier, low noise amplifier, mixer, voltage control oscillator are the main block of Transceiver. Power amplifiers are a key part of RF transmitters. 2.4 GHz RF CMOS power amplifier implemented with SMIC 0.13μm is proposed. After power amplifier low power 2.4 GHz RF CMOS mixer with SMIC 0.13μm is proposed. The main aim is to improve the gain, increase the linearity and figure of merit.

Keywords: power amplifier; mixer; RF CMOS; WSN; operating frequency; Transceiver.

[1] M.Hella, M.Ismail, "RF CMOS Power Amplifiers: Theory, Design and Implementation", Ohio State University.

[2] Ho Ka Wai, "A 1-V CMOS Power Amplifier for Bluetooth Applications"

[3] Kyu Hwan An, "CMOS RF POWER AMPLIFIERS FOR MOBILE WIRELESS COMMUNICATIONS"

[4] Ravinder Kumar, Munish Kumar, Balraj, "Design and Implementation of a High Efficiency CMOS Power Amplifier for Wireless Communication at 2.45 GHz". 2012 International Conference on Communication Systems and Network Technologies.

[5] Wenyuan Li, Yulong Tan , "2.4GHz Power Amplifier with Adaptive Bias Circuit", Institute of RF- & OE-ICs Southeast University Nanjing, China, 2012 International Conference on Systems and Informatics (ICSAI 2012)

[6] G.Monprasert,P. Suebsombut,T.Pongthavornkamol, S. Chalermwisutkul, "2.45 GHz GaN HEMT Class-AB RF Power Amplifier Design for Wireless Comm -unication Systems", The Sirindhorn International Thai-German Graduate School of Engineering (TGGS), King Mongkut's University of Technology North Bangkok, IEEE 2010.

Abstract: Digital Watermarking is a process of embedding information in the multimedia content (host or cover image) for image authentication. An ideal watermarking system would embed an amount of information that could not be removed or altered without making the cover object entirely unusable. Over the past few years digital watermarking has become popular due to its significance in content authentication and legal ownership for digital multimedia data. A digital watermark is a sequence of information containing the owner's copyright. It is inserted invisibly in another image so that it can be extracted at later times for the evidence of rightful
ownership..

[1] G. Bhatnagar and B. Raman, ―A new robust reference watermarking scheme based on DWT-SVD‖,Comput. Standards Interfaces,
Sep 2009, vol. 31, no. 5, pp. 1002–1013.
[2] J. Sang and M. S. Alam, ― Fragility and robustness of binary-phase-only filter-Based fragile/semi fragile digital image
watermarking‖, IEEE Transactions on Instrumentation and Measurement, Mar. 2008, vol. 57, no. 3, pp. 595–606.
[3] H.-T. Wu and Y.M. Cheung,― Reversible watermarking by modulation and security enhancement‖, IEEE Trans. Instrum. Meas.,
Jan. 2010, vol. 59, no. 1, pp. 221–228.
[4] V. Aslantas, L. A. Dog˘an, and S. Ozturk, ―DWT-SVD based image watermarking using particle swarm optimizer,‖ in Proc. IEEE
Int. Conf. Multimedia Expo, Hannover, Germany, 2008, pp. 241–244.
[5] Doerr, G. and J. Dugelay, ―A guided tour to video watermarking. Signal Processing‖, Image Commun., 2003, 18:263-282.
[6] Chan, P. and M. Lyu,,‖A DWT-based digital video watermarking scheme with error correcting code‖. Lecture Notes Comput. Sci.,
2003.2836: 202-213. DOI: _10 1007/b13930.
[7] X.W Kong, Y. Liu, H.J Liu, and D.L Yang, "Object Watermarks for Digital Images and Video", Image and Vision Computing,
2004, Vol. 22, pp.583-595.

Abstract: Long Term Evolution (LTE) is the last step towards the 4th generation of cellular networks. This revolution is necessitated by the unceasing increase in demand for high speed connection on LTE networks. This thesis mainly focuses on performance evaluation of throughput performance analysis VoIP in the LTE networks. In the course of throughput performance analysis and performance evaluation, simulation approach is realized using simulation tool OPNET 16.

Keywords: Long Term Evolution (LTE), Voice over Internet Protocol (VoIP), Quality of Service (QoS).

[1] General packet radio service (gprs) enhancements for evolved universal terrestrial radio access net- Work (e-utran) access. 3GPP TS 23.401 v. 8.8.0, Dec-2009.

[2] Release 8 V0.0.3 3GPP. "Overview of 3gpp release 8: Summery of all release 8 features". November 2008.

[3] GPP TS 36.71 Evolved Universal Terrestrial Radio Access (E-UTRA). Physical channels and Modulation. [4] Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestri al Radio Access Network (E-UTRAN). 3gpp ts 36.300. Version 8.11.0, Jan-2010.

[5] H. Ekstrom. QoS control in the 3gpp evolved packet system. IEEE Communications Magazine, Feb. 2009.

[6] K. Aho T. Henttonen J. Puttonen, H.-H. Puup ponen and M. Moisio. Impact of control channel Limitations on the lte VoIP capacity. In 2010.

[7] N. Kolehmainen K. Aschan M. Moisio J. Puttonen, T. Henttonen and P. Kela. Voice-over- ip performance in utra long term evolution downlink. In VTC Spring 2008.