BER Analysis of OFDM with Raised Cosine Window and Equalization using Rician Channel
Journal Title: International Journal of Engineering Sciences & Research Technology - Year 30, Vol 3, Issue 8
Abstract
Wireless communications is emerging as the largest sectors of telecommunications industry. It is the one area that promises a lot of prospects for growth in the coming century. The major challenges for the future research and study in this field include utilizing the limited available spectrum efficiently and improved link reliability between communicating equipment. The environment in which the communication equipments are required to be operating suffers from fading and interference from other users. Frequency selective fading channels can model such hostile conditions that exist in the environment. The Orthogonal Frequency Division Multiplexing (OFDM) technique that is a multi-carrier technique for data transmission is best suited for such channel models. OFDM is thus characterized by the presence of many sub-carriers. These sub-carriers among the different users bear an orthogonal relation with each other. Here the user spectrums have the flexibility to overlap thereby leading to an enhanced spectrum efficiency of the system. This flexibility is provided by this orthogonal relationship between the sub-carriers as it is necessary in overcoming deteriorating effects such as ICI or Inter-Carrier Interference which is responsible for reducing the BER (Bit Error Rate) performance of the system. Here, it is observed that for the traditional OFDM system the SNR of 55 dB is achieved as compared to the simulated result (involving RC (Raised Cosine) window and Equalization techniques) of an SNR value of 31 dB; for the bit error rate value of 10−2.9 under Rician channel. So, an improvement of 24 dB is achieved with the proposed OFDM system. Thus, the BER performance of the system shows improvement.
Authors and Affiliations
Nikhil Bhardwaj*1
Keywords
Related Articles
- EP ID EP158701
- DOI -
- Views 88
- Downloads 0
ADAPTIVE NOISE CANCELLATION TECHNIQUE USING LMS,RLS AND WAVELET TRANSFORM
This paper describes the concept of adaptive noise cancelling (ADC), in alternative scheme of estimating signals corrupted by additive noise or interference. The main objective of the noise cancellation is to esti...
Time Streaming of 3D Objects and Movies with Virtual Reality
Throughout the past decade, the notion of Virtual Reality and its usage technique has influenced research in many application areas including Image Based Rendering, Medical, Military, Virtual health clinic, Simula...
EDGE DETECTION TECHNIQUES IN IMAGE PROCESSING WITH ELABORATIVE APPROACH TOWARDS CANNY
Edge is defined as the boundary pixels that connect two separate regions. Edges are local changes in the image intensity. Edges characterize boundaries and are therefore a problem of fundamental importance in image proce...
Study Of Influence Of Micro Structural Parameters On Workability And
The present paper deals with the influence of percentage metakaolin (0, 10, 20 and 30 replacing cement by water-binder ratio (0.325, 0.35, 0.375 and 0.40) and the aggregate compressive strength of HPC. The experi...
EVALUATION OF ANALYTICAL MODELS FOR PREDICTION OF HEIGHT OF CAPILLARY RISE FROM WATER TABLE IN DIFFERENT POROUS MEDIA
The prediction of the capillary rise height in the unsaturated porous media above the water table is important in hydrology, water management, contaminant transport and geotechnical engineering studies. The heights of t...