STUDY ON MULTIMEDIA MOBILE INFORMATION NETWORK

多媒体移动信息网络研究

• 批准号: 07455420
• 负责人: YOSHIDA Susumu
• 金额: $ 1.15万
• 依托单位: KYOTO UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07455420/
• 关键词: Mobile communication; Fading; Interference canceler; Multimedia; Image transmission; Dynamic channel assignment; Asymmetric traffic; バースト誤り; 動画像伝送; 静止画像伝送

Towards the realization of high rate and highly reliable multi-media communication over mobile radio channel, basic key techniques have been studied. Major research results are summarized as follows.・ Interference canceler, not only canceling co-channel interference but also overcoming severe intersymbol interference caused by multipath propagation, has been studied. In particular, trellis coded interference canceler (TCC) and simple yet poweful single-user type interference canceler have been proposed and studied in detail for TDMA and CDMA,respectively.・ A dynamic channel allocation algorithm suitable for integrated traffic consisting of voice and data, for instance, has been proposed. Its superior performance has been verified assuming single slot voice and three slot data traffic.・ A dynamic channel allocation algorithm suitable for an asymmetric channel where up-link and down-link traffic are not balanced has been studied assuming TDMA/TDD system. By allocating more channels to the heavier traffic side between up and down links, better performance has been confirmed.・ In highly data compressed image transmission, variable lenght coding is frequently used. It is, therefore, likely to lose frame synchronization and bursty errors occur. We have proposed to combine error resiliant entropy coding (EREC) and unequal error protection coding, and confirmed its superior performance.・ In moving image transmission, interframe predictive coding is often used. Errors tend to propagate through the succeeding frames. Thus, to prevent error propagation, an error control scheme based on ARQ which takes the advantage of the assumed source coding into account has been proposed, and its superior performance has been confirmed.

为实现移动无线信道上高速率、高可靠的多媒体通信，主要研究成果如下： · 干扰消除器，不仅消除同频干扰，而且克服严重的码间干扰。特别是，针对 TDMA 和 TDMA 提出并详细研究了网格编码干扰消除器 (TCC) 和简单但功能强大的单用户型干扰消除器。分别是 CDMA。 ・ 一种适用于由语音和数据组成的综合业务的动态信道分配算法，已在假设单时隙语音和三时隙数据业务的情况下得到了验证。 ・ 一种适用的动态信道分配算法。对于上行链路和下行链路流量不平衡的非对称信道，已经在假设 TDMA/TDD 系统的情况下进行了研究。通过在上行链路和下行链路之间的流量较大的一侧分配更多的信道，已经证实了更好的性能。 ・ 在高数据量情况下。压缩图像传输，可变长度编码经常使用，因此可能会丢失帧同步并发生突发错误，我们提出了将抗错熵编码（EREC）和不等错误保护编码结合起来，并证实了其优越的性能。 ・在运动图像传输中，经常使用帧间预测编码。因此，为了防止错误传播，提出了一种基于ARQ的错误控制方案，该方案考虑了假设的源编码的优点，并且其优越性。性能已得到确认。

项目成果

Lan Chen: "A Dynamic Channel Assignment Algorithm for Voice and Data Integrated TDMA Mobile Radio" Proc.7th IEEE PIMRC Conference. 213-217 (1996)

Lan Chen：“语音和数据集成 TDMA 移动无线电的动态信道分配算法”Proc.7th IEEE PIMRC 会议。

Y.Koyama, S.Yoshida: "Error control for still image transmission over a fading channel" Proc.of IEEE VTC' 95. 609-613 (1995)

Y.Koyama、S.Yoshida：“衰落通道上静态图像传输的错误控制”Proc.of IEEE VTC 95. 609-613 (1995)

K. Takinami: "Simple adaptive interference cenceler suitable for DS-CDMA mobile radio" to be presented at IEEE Vehicular Technology Conferenece '97. (1997)

K. Takinami：“适用于 DS-CDMA 移动无线电的简单自适应干扰消除器”将在 IEEE 车辆技术会议 97 上发表。

L. Chen: "A dynamic channel assignment algorithm for voice and data integrated TDMA mobile radio" Proc. of 7th IEEE PIMRC '96. 213-217 (1996)

L. Chen：“语音和数据集成 TDMA 移动无线电的动态信道分配算法”Proc。

Susumu Yoshida: "Error control for still image transmission over a fading channel" Proceedings of IEEE VTC'95. 609-613 (1995)

Susumu Yoshida：“衰落通道上静态图像传输的错误控制”IEEE VTC95 论文集。