Propotional Revision of WCDMA and LTE
 |
International Journal of Computer & Organization Trends (IJCOT) |  |
| © 2016 by IJCOT Journal | ||
| Volume - 6 Issue - 3 |
||
| Year of Publication : 2016 | ||
| Authors : Pooja Yadav, Mamta Yadav | ||
| DOI : 10.14445/22492593/IJCOT-V34P307 |
Citation
Pooja Yadav, Mamta Yadav "Propotional Revision of WCDMA and LTE", International Journal of Computer & organization Trends (IJCOT), V6(3):24-27 May - Jun 2016, ISSN:2249-2593, www.ijcotjournal.org. Published by Seventh Sense Research Group.
Abstract Mobile communication is one of the warmest areas and it is emerging tremendously fast in present times, thanks to the advances of technology in all the fields of mobile and wireless communications. Nowadays the use of 3G mobile communication systems appear to be the standard, while 4G stands for the next generation of wireless and mobile communications. This comparative study between 3G & 4G tells about the background and the vision for the 4G. We first present a evaluation on the development history, characteristics, status of mobile communication and related 3G - 4G perspectives. An overall 4G framework features, having the basic keys (diversity and adaptability) of the three targets (terminals, networks, and applications). We present it in both external and internal diversity of each target to illustrate the causes and solutions of the adaptability feature. Then, the 4G domain of each feature in the framework is discussed from technical point, showing techniques and possible research issues for sufficient support of adaptability. At the end, a summary on 4G visions and some of the issues this new technology may face. All radio access technologies have to solve the same problems: to divide the finite RF spectrum among multiple users as efficiently as possible. GSM uses TDMA and FDMA for user and cell separation. UMTS, IS- 95 and CDMA-2000 use CDMA. WiMAX and LTE use OFDM.
References
[1]. 1.B.G. Evans and K. Baughan, ?Visions of 4G, Electronics & Communication Engineering Journal, Vol. 12, No. 6, pp. 293–303, Dec. 2000.
[2]. 2. C. R. Casal, F. Schoute, and R. Prasald, ?A novel concept for fourth generation mobile multimedia communication, in 50th Proc. IEEE Vehicular Technology Conference, Amsterdam, Netherlands, Sep. 1999, Vol. 1, pp. 381–385.
[3]. 3. S. Y. Hui, K. H. Yeung, ? Challenges in the migration to 4G mobile systems, Communications Magazine, IEEE , Volume: 41 , Issue: 12 , Dec. 2003, pp:54 – 59.
[4]. 4.A. Bria, F. Gessler, O. Queseth, R. Stridh, M. Unbehaun, J. Wu, J. Zander, ?4th-generation wireless infrastructures: scenarios and research challenges, Personal Communications, IEEE [see also IEEE Wireless Communications], Volume:8, Issue:6, Dec.2001, pp:25 – 31.
[6] U. Varshney, R. Jain, ?Issues in emerging 4G wireless networks,Computer, Volume:34, Issue:6, June2001, pp:94 – 96.
[5]. 5. K. R. Santhi, V. K. Srivastava, G. SenthilKumaran, A. Butare, ?Goals of true broad band`s wireless next wave (4G- 5G), Vehicular Technology Conference, 2003. VTC 2003- Fall. 2003 IEEE 58th , Volume: 4 , 6-9 Oct. 2003, Pages:2317 - 2321 Vol.4.
[6]. 6. L. Zhen, Z. Wenan, S. Junde, H. Chunping, ?Consideration and research issues for the future generation of mobile communication, Electrical and Computer Engineering, 2002. IEEE CCECE 2002. Canadian Conference on , Volume:3, 12-15May,2002 , pp:1276 - 1281 vol.3.
[7]. 7. S. Chatterjee, W. A. C Fernando, M. K.. vasantha, ?Adaptive modulation based MC-CDMA systems for 4G wireless consumer applications, Consumer Electronics, IEEE Transactions on , Volume: 49 , Issue:4, Nov.2003, pp:995 – 1003.
[8]. 8. J. B. Chia, ?Video services over 4G wireless networks: not necessarily Streaming, Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE , Volume: 1 , 17-21 March 2002 , pp:18 - 22 vol.1.
Keywords
OFDM, HSPA, LTE, MIMO, MCCDMA, WCDMA, UMB.