Paper Info
Title
Hybrid analog-digital coding scheme based on parallel concatenation of linear random projections and LDGM codes
Abstract
This paper aims at designing a hybrid analog-digital coding scheme that can be applied for rate adaption in a broad dynamic range of channel conditions. The hybrid scheme is constructed by generating most of the output symbols from standard linear combinations of the input bits, as in Rate Compatible Modulation (RCM), and a few of them using a Low Density Generator Matrix (LDGM) code. RCM is able to achieve smooth rate adaption, but its performance is far from the Shannon theoretical limits. The few coded bits proceeding from the LDGM code are able to substantially reduce the number of uncorrected errors in the RCM scheme, substantially improving the system performance.
Year
DOI
Venue
2014
10.1109/CISS.2014.6814118
CISS
Keywords
Field
DocType
random codes,rate compatible modulation,linear codes,hybrid analog-digital coding scheme,shannon theoretical limits,rcm scheme,linear random projections,channel coding,rate adaption,random projections,ldgm codes,channel conditions,parallel concatenation,linear combinations,smooth rate adaption,low density generator matrix,generators,modulation,decoding,encoding,bit error rate,system performance,message passing
Linear combination,Low density generator matrix,Mathematical optimization,Dynamic range,Computer science,Algorithm,Communication channel,Digital coding,Theoretical computer science,Coding (social sciences),Modulation,Concatenation
Conference
Citations 
PageRank 
References 
1
0.36
0
Authors
2
Name
Order
Citations
PageRank
Lu Li120.72
Javier Garcia-Frias271669.63