Title :
New results on unequal error protection using LDPC codes
Author :
Rahnavard, Nazanin ; Fekri, Faramarz
Author_Institution :
Sch. of Electr. & Comput. Eng, Georgia Inst. of Technol., Atlanta, GA, USA
fDate :
1/1/2006 12:00:00 AM
Abstract :
In this letter, we propose a new scheme to construct low-density parity-check (LDPC) codes that are suitable for unequal error protection (UEP). We derive UEP density evolution (UDE) formulas for the proposed ensemble over the binary erasure channel (BEC). Using the UDE formulas, high performance UEP codes can be found. Simulation results depict an improvement in the bit error rate of more important bits in comparison with previous results on UEP-LDPC codes.
Keywords :
binary codes; channel coding; error correction codes; error statistics; parity check codes; BEC; BER; LDPC code; UEP density evolution formula; binary erasure channel; bit error rate; low-density parity-check code; unequal error protection; Bit error rate; Computer errors; Design methodology; Error analysis; Error correction codes; Parity check codes; Protection;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/LCOMM.2006.1576564
