Title :
Combined Analog and Digital Error-Correcting Codes for Analog Information Sources
Author :
Rosenhouse, Isaac ; Weiss, Anthony J.
Author_Institution :
Ceragon Networks, Tel Aviv
Abstract :
This paper focuses on error-correcting codes for analog signals. Generally, error-correcting codes exhibit a threshold effect, which degrades performance at the low signal-to-noise ratio (SNR) range. We propose two error-correction alternatives based on chaotic dynamical systems, which improve threshold performance relative to previously proposed methods. The first one, which is based on principles of diversity, exhibits a very simple decoder. The second alternative, which is based on a low-density parity-check (LDPC) code, attains a significantly lower threshold. Theoretical analysis and simulations are provided.
Keywords :
chaos; decoding; error correction codes; parity check codes; LDPC; analog information source; analog-digital error-correcting codes; chaotic dynamical system; decoder; low-density parity-check code; Chaotic communication; Character generation; Decoding; Degradation; Error correction codes; Parity check codes; Quantization; Redundancy; Signal to noise ratio; Transmitters; Analog signals; chaotic systems; diversity; error correction; low-density parity check (LDPC); threshold extension;
Journal_Title :
Communications, IEEE Transactions on
DOI :
10.1109/TCOMM.2007.908516
