BER EVALUATION OF LDPC CODES WITH GMSK IN NAKAGAMI FADING CHANNEL
Journal: ICTACT Journal on Communication Technology (IJCT) (Vol.1, No. 2)Publication Date: 2010-06-01
Authors : Surbhi Sharma; Rajesh Khanna;
Page : 113-117
Keywords : Channel Codes; LDPC; Density Evaluation; GMSK; Nakagami Fading;
Abstract
LDPC codes (Low Density Parity Check Codes) have already proved its efficacy while showing its performance near to the Shannon limit. Channel coding schemes are spectrally inefficient as using an unfiltered binary data stream to modulate an RF carrier that will produce an RF spectrum of considerable bandwidth. Techniques have been developed to improve this bandwidth inefficiency or spectral efficiency, and ease detection. GMSK or Gaussian-filtered Minimum Shift Keying uses a Gaussian Filter of an appropriate bandwidth so as to make system spectrally efficient. A Nakagami model provides a better explanation to less and more severe conditions than the Rayleigh and Rician model and provide a better fit to the mobile communication channel data. In this paper we have demonstrated the performance of Low Density Parity Check codes with GMSK modulation (BT product=0.25) technique in Nakagami fading channel. In results it is shown that average bit error rate decreases as the ‘m’ parameter increases (Less fading).
Other Latest Articles
- EVALUATION OF OPTIMAL TRANSMIT POWER IN WIRELESS SENSOR NETWORKS IN PRESENCE OF RAYLEIGH FADING
- CROSS LAYER BASED THROUGHPUT OPTIMIZATION IN COGNITIVE RADIO NETWORKS WITH EFFECTIVE CHANNEL SENSING SCHEMES
- FAULT LOCALIZATION AND ALARM CORRELATION IN OPTICAL WDM NETWORKS
- A TWO LEVEL ARCHITECTURE USING CONSENSUS METHOD FOR GLOBAL DECISION MAKING AGAINST DDoS ATTACKS
- PERFORMANCE ANALYSIS OF DSR ROUTING PROTOCOL UNDER ENERGY BASED SELFISH ATTACK IN MOBILE AD HOC NETWORKS
Last modified: 2013-12-04 18:30:00