naa a22 4500 510798314 CHVBK 20180411083344.0 cr unu---uuuuu 180411e20131001xx s 000 0 eng 10.1007/s11277-013-1191-z doi (NATIONALLICENCE)springer-10.1007/s11277-013-1191-z 8-QAM Software Defined Radio Based Approach for Channel Encoding and Decoding Using Forward Error Correction [Elektronische Daten] [Nikhil Marriwala, O. Sahu, Anil Vohra] The aim of this paper is to use a software defined radio (SDR) based approach in order to select channel encoding and decoding method accordingly using 8-QAM (Quadrature Amplitude Modulation) in terms of bit error rate (BER). By selecting a higher order format of QAM, we are able to carry more bits of information per symbol; also the data rate can be increased thus achieving greater distance between adjacent points in the I-Q plane by distributing the points more evenly. Hence the constellation points are more distinct and data errors are reduced. In the present work 8-QAM is chosen as modulation scheme so that balance can be maintained between higher data rates while maintaining an acceptable bit error rate for SDR. Channel coding schemes forward error correction are used where the re-transmission of the data is not feasible, thus redundant bits are added along with the message bits and transmitted through the channel. On the receiver side, this channel coded signal is decoded in order to get back the original data even if the channel coded signal undergoes some interference from the noise in the transmission medium. The performance is then analyzed in terms of BER for Hamming and convolution coding algorithms at a particular value of SNR in LabVIEW graphical programming. With the help of LabVIEW we were able to design the systems in a block-based manner in shorter time as compared to the commonly used text-based programming languages. Springer Science+Business Media New York, 2013 SDR nationallicence 8-QAM nationallicence Hamming coding nationallicence Convolution coding nationallicence BER nationallicence Marriwala Nikhil Electronics and Communication Engineering Department, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India aut Sahu O. Electronics and Communication Engineering Department, N.I.T, Kurukshetra, India aut Vohra Anil Electronic Science Department, Kurukshetra University, Kurukshetra, India aut Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2957-2969 0929-6212 72:4<2957 2013 72 11277 https://doi.org/10.1007/s11277-013-1191-z text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11277-013-1191-z text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Marriwala Nikhil Electronics and Communication Engineering Department, University Institute of Engineering and Technology, Kurukshetra University, Kurukshetra, India aut NATIONALLICENCE 700 1- Sahu O. Electronics and Communication Engineering Department, N.I.T, Kurukshetra, India aut NATIONALLICENCE 700 1- Vohra Anil Electronic Science Department, Kurukshetra University, Kurukshetra, India aut NATIONALLICENCE 773 0- Wireless Personal Communications Springer US; http://www.springer-ny.com 72/4(2013-10-01), 2957-2969 0929-6212 72:4<2957 2013 72 11277 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer