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反饋信道下基于LT碼的空間網(wǎng)絡(luò)廣播傳輸策略設(shè)計(jì)

索龍龍 張更新 邊東明 呂晶 謝智東

索龍龍, 張更新, 邊東明, 呂晶, 謝智東. 反饋信道下基于LT碼的空間網(wǎng)絡(luò)廣播傳輸策略設(shè)計(jì)[J]. 電子與信息學(xué)報(bào), 2018, 40(6): 1433-1437. doi: 10.11999/JEIT170820
引用本文: 索龍龍, 張更新, 邊東明, 呂晶, 謝智東. 反饋信道下基于LT碼的空間網(wǎng)絡(luò)廣播傳輸策略設(shè)計(jì)[J]. 電子與信息學(xué)報(bào), 2018, 40(6): 1433-1437. doi: 10.11999/JEIT170820
SUO Longlong, ZHANG Genxin, BIAN Dongmin, Lü Jing, XIE Zhidong. Design of Efficient Broadcast Transmission Strategy for Spatial Networks Based on LT Codes with Feedback Channel[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1433-1437. doi: 10.11999/JEIT170820
Citation: SUO Longlong, ZHANG Genxin, BIAN Dongmin, Lü Jing, XIE Zhidong. Design of Efficient Broadcast Transmission Strategy for Spatial Networks Based on LT Codes with Feedback Channel[J]. Journal of Electronics & Information Technology, 2018, 40(6): 1433-1437. doi: 10.11999/JEIT170820

反饋信道下基于LT碼的空間網(wǎng)絡(luò)廣播傳輸策略設(shè)計(jì)

doi: 10.11999/JEIT170820
基金項(xiàng)目: 

國(guó)家自然科學(xué)基金(91738201, 61571464, 61601511)

Design of Efficient Broadcast Transmission Strategy for Spatial Networks Based on LT Codes with Feedback Channel

Funds: 

The National Natural Science Foundation of China (91738201, 61571464, 61601511)

  • 摘要: 由于其特有的廣域?qū)捀采w等特點(diǎn),數(shù)據(jù)廣播業(yè)務(wù)一直是空間網(wǎng)絡(luò)的主要業(yè)務(wù)。然而空地間信道由于受到遠(yuǎn)距離、天氣變化及遮擋等因素影響,數(shù)據(jù)傳輸時(shí)延長(zhǎng)且丟包率較高。為進(jìn)一步提高數(shù)據(jù)廣播的性能,該文將反饋信息與LT碼相結(jié)合,提出一種新的空間網(wǎng)絡(luò)數(shù)據(jù)廣播傳輸策略。與傳統(tǒng)的數(shù)據(jù)廣播策略相比較,新的傳輸策略利用反饋信息估計(jì)信道丟包率,并在此基礎(chǔ)上引入信道狀態(tài)矩陣和數(shù)據(jù)包選擇權(quán)重向量,設(shè)計(jì)了數(shù)字噴泉新的編碼方法,進(jìn)而使得數(shù)據(jù)在重傳階段能夠根據(jù)信道狀態(tài)和重傳概率實(shí)時(shí)調(diào)整。仿真結(jié)果表明,新的數(shù)據(jù)廣播策略能夠?qū)崿F(xiàn)傳輸較少數(shù)據(jù)包的基礎(chǔ)上實(shí)現(xiàn)原始數(shù)據(jù)的可靠接收。
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出版歷程
  • 收稿日期:  2017-08-14
  • 修回日期:  2018-03-14
  • 刊出日期:  2018-06-19

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