Direct Mapping Multi Input Multi Output Filter Bank Multicarrier Transmission Scheme for Audio and Image Signals

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Project title

Code/計畫編號

MOST107-2221-E992-027

Translated Name/計畫中文名

一種直接映射多輸入多輸出濾波器組多載波水下影音傳輸技術

Funding Organization/主管機關

National Science and Technology Council

Co-Investigator(s)/共同執行人

張順雄(計畫主持人)

Department/Unit

National Kaohsiung University of Science and Technology, NKUST

Website

https://www.grb.gov.tw/search/planDetail?id=12668713

Year

2018

Start date/計畫起

01-08-2018

Expected Completion/計畫迄

01-07-2019

Co-Investigator(s)

Chin-Feng Lin

Bugetid/研究經費

445千元

ResearchField/研究領域

土木水利工程

本計畫提出直接映射多輸入多輸出濾波器組多載波/低密度檢查碼適應性水中聲學影音通訊技術。設計概念為整合多輸入多輸出直接映射、濾波器組多載波、低密度檢查碼、BPSK和OQAM適應性調變技術和功率控制機制進行水下影音傳輸。濾波器組多載波的概念為傳輸訊號逆傅立葉轉換機制後整合濾波器群組，強化正交性特徵，濾波器組多載波技術在水中聲學通道傳輸效能和頻寬效率優於正交分頻多工技術。多路徑干擾效應為淺水域水中聲學通道主要雜訊源之一，低密度檢查碼可降低淺水域多路徑雜訊，增加傳輸可靠度。本計畫所提出系統使用較高傳輸功率和較低速度調變技術，應用至水下影像訊號傳輸，達到傳輸位元錯誤率為 0.0001；使用較低傳輸功率和較快速度調變技術，應用至水下音訊訊號傳輸，達到傳輸位元錯誤率為 0.001。本計畫，模擬將被進行，水下影音訊號傳輸效能將被研習。 This project aims to develop a direct mapping (DM) multiple input multi output (MIMO) filter bank multicarrier (FBMC)/low-density parity-check code (LDPC) adaptive modulation scheme for underwater acoustic audio and image communication systems. The proposed scheme integrates DM MIMO, FBMC, LDPC error protection strategies, binary phase shift keying (BPSK) and offset quadrature amplitude modulation (OQAM) techniques, and a power assignment mechanism, in an underwater acoustic audio and image communication system. A aspects of FBMC include the integration for digital filter bank and orthogonal frequency division modulation (OFDM) so as to achieve the characteristic of robustness orthogonality. The multipath interference is one of the primary noises in an underwater acoustic channel, and the LDPC scheme can decrease the multipath interference, and increase transmission reliability. As compared to OFDM scheme, the FBMC has lower adjacent channel interference, high transmission performance, and spectral bandwidth efficiency. Thus, it is suitable for underwater acoustic communication. The proposed system employs high power, and low speed modulation, with schemes providing image signal transmission and achieving a bit error rate of 0.0001. In contrast, low power, and high speed modulation schemes, provide audio signal transmission and achieve a bit error rate of 0.001. For verifying the proposed argument, a simulation is performed and the performances of the underwater acoustic audio and image signals are studied.

Keyword(s)

直接映射多輸入多輸出
濾波器組多載波
低密度檢查碼
OQAM
適應性調變
水中聲學影音通訊技術
direct mapping multiple input multi output
filter bank multicarrier
low-density parity-check code
OQAM
adaptive modulation
and underwater acoustic audio and image communication scheme

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Direct Mapping Multi Input Multi Output Filter Bank Multicarrier Transmission Scheme for Audio and Image Signals

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