Two results on the permuting mailbox channel
Philippe Piret · IEEE Transactions on Information Theory · 1989
Two problems of information transmission on the permuting mailbox (or relay) channel are considered. Such a channel is characterized by the cardinality epsilon of the alphabet and the number b of letters in the mailbox. In the case b=1, an upper bound is obtained on the achievable rate in the jamming situation. In the case epsilon =2, it is proven that time-sharing is not always the best solution when both main users wish to transmit information to a third user.>