Enhancement LTE System Based on DWT and Four STBC Transmit Antennas in Multichannel Models
Issue:
Volume 4, Issue 2, April 2015
Pages:
10-20
Received:
30 December 2014
Accepted:
30 January 2015
Published:
16 March 2015
Abstract: In this paper Enhancement detail for the two main applications of Long Term Evolution (LTE) these are fixed and Mobile LTE. Fixed LTE will send the data from a single point-to-multipoint like user's houses and companies. While full mobility achieved by Mobile LTE to cellular networks. This done at very high broadband data rate comparted with other broadband networks like WiMax and Wi-Fi. The two types of LTE above are used in planning of a proper network which offers better throughput wireless broadband connectivity with lower cost. This work present a new proposed structures for LTE based on Space Time Block Coding (STBC-LTE) and Discrete Wavelets Transform (DWT) as multicarrier. The purpose of these new proposed structures is to improve the performance of bit error rate (BER) compared with the conventional STBC-LTE that use fast Fourier transform (FFT) as multicarrier. In addition, the new proposed structures with more than three transmits antennas and DWT was used in first time in LTE systems to enhance spectral efficiency and supports BER performance. The proposed STBC- LTE systems have been examined under different channel models like “AWGN, flat fading, and three types of multipath selective fading channel models (Extended Pedestrian, Extended Vehicular and Extended Typical Urban)”. The simulation results achieved in this work show that STBC- LTE based on DWT with four transmits antennas given best between other conventional STBC-LTE based on FFT systems. All these LTE systems models were built using MATLAB 2014a to permit various system parameters to be changed and tested like signal to noise ratio (SNR) and maximum Doppler shift and type of channel and channel parameters of the system.
Abstract: In this paper Enhancement detail for the two main applications of Long Term Evolution (LTE) these are fixed and Mobile LTE. Fixed LTE will send the data from a single point-to-multipoint like user's houses and companies. While full mobility achieved by Mobile LTE to cellular networks. This done at very high broadband data rate comparted with other ...
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Effective Energy Constraint Routing with On-Demand Routing Protocols in MANET
Kanwal Deep Kaur,
Manish Bhardwaj
Issue:
Volume 4, Issue 2, April 2015
Pages:
21-24
Received:
15 March 2015
Accepted:
23 March 2015
Published:
30 March 2015
Abstract: MANET is a dynamically reconfigurable wireless network with no fixed infrastructure. Each node acts as a router and host and it moves in an arbitrary manner in many ad hoc networks. It is significant that an energy conscious routing strategy should be adopted to minimize the energy required for communication. In such an environment, each host acts as a router and forwards packets to the next hop in order to reach, hop by hop, the final target. The major requirement in the MANET is which are usually characterized by mobile nodes with limited battery, is to limit the energy consumption.So, in this paper we are going to do the effective routing with the on demand protocols. The proposed method will try to prove that RAODV is better protocol than AODV and DSR using Network Simulator. To meet the new challenges, innovative protocols are needed to achieve energy efficiency, flexible scalability and adaptability and good network performance. This paper seeks to study and analyze the on demand routing protocols with identical loads and environment conditions and also evaluate their relative performance with respect to performance metrics.
Abstract: MANET is a dynamically reconfigurable wireless network with no fixed infrastructure. Each node acts as a router and host and it moves in an arbitrary manner in many ad hoc networks. It is significant that an energy conscious routing strategy should be adopted to minimize the energy required for communication. In such an environment, each host acts ...
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