Title :
Opportunistic capacity and error exponent regions for compound channel with feedback
Author :
Mahajan, Aditya ; Tatikonda, Sekhar
Author_Institution :
Dept. of Electr. Eng., Yale Univ., New Haven, CT, USA
Abstract :
Capacity of a compound channel without feedback is defined in a pessimistic manner as the maximum rate determined before the start of communication such that communication is reliable. In the presence of feedback, the transmission rate can adapt to the channel chosen by nature. Thus, capacity can be defined in an opportunistic manner as the maximum rate determined at the end of communication such that communication is reliable. Under this definition, transmission rate and error exponents are regions rather than scalars. In this paper, variable length communication over a compound channel with feedback is formulated, its opportunistic capacity region is characterized, and lower bounds for its error exponent region are provided.
Keywords :
channel capacity; communication reliability; compound channel capacity; error exponent region; error exponents; feedback; maximum rate; opportunistic capacity region; transmission rate; variable length communication; Capacity planning; Costs; Decoding; Memoryless systems; Monte Carlo methods; Mutual information; Output feedback; Probability distribution; Propagation losses; Telecommunication network reliability;
Conference_Titel :
Information Theory Proceedings (ISIT), 2010 IEEE International Symposium on
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4244-7890-3
Electronic_ISBN :
978-1-4244-7891-0
DOI :
10.1109/ISIT.2010.5513234
