Topological Structures on DMC Spaces (†).
Topological Structures on DMC Spaces (†).
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DOI:
10.3390/e20050343
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发表时间:
2018-05-04
期刊:
影响因子:
--
通讯作者:
Nasser R
中科院分区:
文献类型:
--
作者:
Nasser R
Two channels are said to be equivalent if they are degraded from each other. The space of equivalent channels with input alphabet and output alphabet can be naturally endowed with the quotient of the Euclidean topology by the equivalence relation. A topology on the space of equivalent channels with fixed input alphabet and arbitrary but finite output alphabet is said to be natural if and only if it induces the quotient topology on the subspaces of equivalent channels sharing the same output alphabet. We show that every natural topology is -compact, separable and path-connected. The finest natural topology, which we call the strong topology, is shown to be compactly generated, sequential and . On the other hand, the strong topology is not first-countable anywhere, hence it is not metrizable. We introduce a metric distance on the space of equivalent channels which compares the noise levels between channels. The induced metric topology, which we call the noisiness topology, is shown to be natural. We also study topologies that are inherited from the space of meta-probability measures by identifying channels with their Blackwell measures.
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DOI:
10.1049/ip-com:20050230
发表时间:
2005-12-01
期刊:
IEE PROCEEDINGS-COMMUNICATIONS
影响因子:
--
作者:
Rathi, V;Urbanke, R
通讯作者:
Urbanke, R
影响因子:
2.5
作者:
Schwarte, H
通讯作者:
Schwarte, H
影响因子:
1.2
作者:
Buscemi, F.
通讯作者:
Buscemi, F.
影响因子:
2.5
作者:
Bennatan, A;Burshtein, D
通讯作者:
Burshtein, D
影响因子:
1.1
作者:
Martin, Keye
通讯作者:
Martin, Keye