On the Capacities of Discrete Memoryless Thresholding Channels
| Autor: | Thuan Nguyen, Yu-Jung Chu, Thinh Nguyen |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Markov chain
Computer science 020206 networking & telecommunications 02 engineering and technology Topology Thresholding Channel capacity Pulse-amplitude modulation 0202 electrical engineering electronic engineering information engineering Entropy (information theory) Convex function Decoding methods Computer Science::Information Theory Communication channel |
| Zdroj: | VTC Spring |
| Popis: | In this paper, we study the channel capacity of discrete memoryless thresholding channels (DMTCs) that are used in Pulse Amplitude Modulation (PAM) for LED free-space transmissions. Although capacities of discrete memoryless channels (DMC) are well-studied and can be determined by various algorithms, the capacity of a DMTC is less explored and its capacity is more difficult to obtain. This is due to the fact that, unlike a typical DMC channel whose the capacity is a function input distribution, the capacity of a DTMC channel is a function of both input distribution and decision thresholds. To resolve this problem, we propose an algorithm for finding the channel capacity of a DMTC. Both theoretical and numerical results are provided to verify our approach. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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