Analog nonlinear MIMO receiver for optical mode division multiplexing transmission
نویسندگان
چکیده
منابع مشابه
Secret Information Transmission in Mimo Eigenbeam-space Division Multiplexing
近年の無線通信の普及に伴い,無線通信のセキュリ ティ対策が重要となっている.無線通信における盗聴 対策としては,共通鍵暗号方式を用いて暗号通信を行 うことが一般的である.共通鍵暗号方式は,第三者に は秘密の情報(以下,秘密情報と呼ぶ)に対して,送 信局と受信局で同じ秘密鍵を用いて暗号化と復号を行 う方式で,暗号化した情報を伝送することで秘密情報 の安全性を保つことができる.この方式は,秘密通信 が容易であるという利点がある一方で,秘密鍵を第三 者に知られないように共有し,管理する必要がある. 秘密鍵の共有手法として,現在は公開鍵暗号方式を用 いた秘密鍵の直接配送により共有することが一般的で あるが,公開鍵暗号方式は計算量の複雑性に基づく方 式であるため,消費電力に制限のある移動通信に適用 するには計算量の点で課題が残る. この課題を解決する一手法として,電波伝搬特性に 基づいた秘密鍵...
متن کاملOrthogonal frequency division multiplexing for high-speed optical transmission.
Optical Orthogonal frequency division multiplexing (OOFDM) is shown to outperform RZ-OOK transmission in high-speed optical communications systems in terms of transmission distance and spectral efficiency. The OOFDM in combination with the subcarrier multiplexing offers a significant improvement in spectral efficiency of at least 2.9 bits/s/Hz.
متن کاملNonlinear Frequency-Division Multiplexing
Two signal multiplexing strategies for multi-user optical fiber communication are considered: Wavelength-division multiplexing (WDM) and nonlinear frequency-division multiplexing (NFDM), based on the nonlinear Fourier transform (NFT). The inverse NFT is implemented using an approach that is dual of the forward NFT and does not require solving integral equations. In contrast to prior work where ...
متن کاملAn Efficient Hierarchical Modulation based Orthogonal Frequency Division Multiplexing Transmission Scheme for Digital Video Broadcasting
Due to the increase of users the efficient usage of spectrum plays an important role in digital terrestrial television networks. In digital video broadcasting, local and global content are transmitted by single frequency network and multifrequency network respectively. Multifrequency network support transmission of global content and it consumes large spectrum. Similarly local content are well ...
متن کاملDiversity-multiplexing tradeoff in mode-division multiplexing.
The capacity of mode-division multiplexing (MDM) systems is limited, for a given outage probability, by mode-dependent loss (MDL) and gain. Modal degrees of freedom may be exploited to increase transmission rate (multiplexing gain) or lower outage probability (diversity gain), but there is a fundamental tradeoff between the achievable multiplexing and diversity gains. In this Letter, we present...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Optics Express
سال: 2013
ISSN: 1094-4087
DOI: 10.1364/oe.21.025174