TO IMPROVE BIT ERROR RATE OF OFDM TRANSMISSION USING TURBO CODES
Journal Title: International Journal of Advanced Research in Computer Engineering & Technology(IJARCET) - Year 2012, Vol 1, Issue 4
Abstract
This review paper deals with the concept of Turbo coded OFDM (Orthogonal frequency division multiplexing) which improves the system throughput. Orthogonal frequency division multiplexing is a popular modulation method in high speed wireless transmission. It removes the detrimental effect of multipath fading by partitioning the wideband fading channel into flat narrow band channels. For this purpose simple one tap equalizer is used. In this paper we will see how performance of an OFDM system can be improved by adding turbo codes to it. This will help to maintain the system performance under a desired bit error rate, as there were errors occurring in burst form in OFDM which eventually degrades the efficiency of the system. Moreover, we can easily overcome the major disadvantages of OFDM i.e. ISI (inter symbol interference) and ICI (Inter carrier Interference) by implementing it. The turbo coding also allows achieving the Shanon's bound Performance. As clearly stated by M.K.Gupta, Vishwas Sharma, Dhiraj G. Agrawal, the simulation is done over AWGN and impulsive noise channels. The wideband system has 48 data subcarriers each is individually modulated according to channel state information during previous burst.
Authors and Affiliations
Ms Neetu Sharma1 , Prof. Rajeshwar Lal Dua
Keywords
Related Articles
- EP ID EP120603
- DOI -
- Views 73
- Downloads 0
FPGA IMPLEMENTATION OF FOUR PHASE CODE DESIGN USING MODIFIED GENETIC ALGORITHM (MGA)
The proposed architecture consists of an efficient VLSI hardware implementation of the Modified Genetic Algorithm for identifying the good pulse compression sequences based on Discrimination Factor. The main advantag...
Analysis of Power Utilization and different Routing Protocols in Mobile Ad Hoc Network (MANET)
Mobile ad hoc network (MANET) is composed of a collection of mobile nodes which are movable. Therefore, dynamic topology, unstable links, limited energy capacity and absence of fixed infrastructure are special features f...
Attacks & Preventions of Cognitive Radio Network-A Survey
In this paper we analyze and surveyed a latest communication technology named “Cognitive Radio Network”. Cognitive radio network is a network in which an un-licensed user can use an empty channel in a spectrum band of li...
Cloud based Intra-College Communication Information System using Mobile Clients
we have seen over the years that the process of notice boards, important notification about academics has been carried out manually almost across all educational institutions. The process is not only time consuming...
Performance Analysis of Various Application Protocols for MANET
A mobile ad hoc network (MANET) consists of mobile wireless nodes. The communication between these mobile nodes is carried without any centralized control. The ease of deployment and the infrastructure less nature of...