Title :
Fundamental limits of diversity-embedded codes over fading channels
Author :
Diggavi, Suhas N. ; Tse, David N C
Author_Institution :
Sch. of Comput. & Commun. Sci., EPFL, Lausanne
Abstract :
Diversity-embedded codes for fading channels are high-rate codes that are designed so that they have a high-diversity code embedded within them. This allows a form of communication where the high-rate code opportunistically takes advantage of good channel realizations whereas the embedded high-diversity code ensures that at least part of the information is received reliably. This can also be thought as coding the data into two streams such that the high-priority stream has higher reliability than the low-priority stream. For SISO (single-input-single-output), SIMO, MISO and parallel fading channels, we characterize the achievable rates and reliability of the two streams in the high SNR regime in terms of the diversity-multiplexing tradeoff. We exhibit the performance gain over a single-stream code. We also show some constructions for finite block lengths that achieve the optimal performance
Keywords :
channel coding; fading channels; MISO channel; SIMO channel; diversity-embedded codes; fading channels; high-rate codes; single-input-single-output; Capacity planning; Decoding; Error probability; Fading; Performance gain;
Conference_Titel :
Information Theory, 2005. ISIT 2005. Proceedings. International Symposium on
Conference_Location :
Adelaide, SA
Print_ISBN :
0-7803-9151-9
DOI :
10.1109/ISIT.2005.1523387