Title :
Refined channel estimation for coherent detection of turbo codes over flat-fading channels
Author :
Valenti, M.C. ; Woerner, B.D.
Author_Institution :
Mobile & Portable Radio Res. Group, Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
8/20/1998 12:00:00 AM
Abstract :
Channel state information is required for the coherent detection and decoding of turbo codes transmitted over flat-fading channels. A channel estimation technique suitable for turbo codes is presented. The technique uses pilot symbols to obtain initial channel estimates, and refines the estimates after each iteration of the turbo decoder
Keywords :
channel coding; convolutional codes; error correction codes; fading; interleaved codes; iterative methods; maximum likelihood decoding; phase shift keying; BPSK; DPSK; coherent detection; decoding; flat-fading channels; initial channel estimates; iteration; pilot symbols; refined channel estimation; turbo codes;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19981183
