Study on adaptive data rate scheme on a mobile channel

移动信道自适应数据速率方案研究

• 批准号: 17560363
• 负责人: FUKASAWA Atsushi
• 金额: $ 2.24万
• 依托单位: The Institute of Statistical Mathematics
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2005
• 资助国家: 日本
• 起止时间: 2005 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-17560363/
• 关键词: Radio Channel; Spreading gain; Eye pattern; Transmission data rate

Enhancement of transmission data rate is rapid in demand on mobile data service. Expanding of radio band is not easily permitted in law. Multi-value modulation degrades the quality of communication, and multi-code scheme is used in spite of reduction of number of user channels.In this study, adaptive data rate scheme is studied time and channel dependent valuation of data rate and contents by users.The W-CDMA Scheme is taken as the basis of this scheme. The system is assumed to be design by Software Defined Radio (SDR) technology for adaptive control data rate. The data rates of 64, 128, 256, 512 kbit/s and 1.024 Mbit/s are taken for 5MHz radio bandwidth at 2GHz. Sufficient characteristic with easy control was confirmed practically with computer simulation and prototype hardware designed with are Field Program Gate Array (FPGA) with a MPU and PC.

在移动的数据业务中，对传输数据速率的提高的需求是迅速的。在法律上不容易允许扩大无线电频带。多值调制降低了通信质量，尽管用户信道数减少了，但仍采用多码方案，本文以W-CDMA方案为基础，研究了用户对数据速率和内容的时间和信道相关估计的自适应数据速率方案。系统采用软件无线电（SDR）技术设计，实现数据速率的自适应控制。对于2GHz的5 MHz无线电带宽，采用64、128、256、512 kbit/s和1.024 Mbit/s的数据速率。通过计算机仿真验证了该系统具有良好的控制性能，并利用现场可编程门阵列（FPGA）和微处理器（MPU）及PC机设计了样机硬件。

项目成果

A O. 18 micrometer CMOS Gaussian Monocycle Pulse Circuit Design for UWB

一种用于UWB的O.18微米CMOS高斯单周期脉冲电路设计

• 发表时间: 2006
• 期刊: Proc. of IEEE Circuits and Systems 2006
• 作者: Y.Muyanaga;et al.
• 通讯作者: et al.

Embedded Computer System for Ubiquitous Communications

无处不在的通信嵌入式计算机系统

• 发表时间: 2007
• 期刊: Proc. of WSES Conference on AIC Paper no. 564-226
• 作者: Yumi Takizawa;Saki Yatano;Atsushi Fukasawa
• 通讯作者: Atsushi Fukasawa

Multi-user Receiver Using Conjugate Gradient Method for Wideband CDMA

采用共轭梯度法的宽带 CDMA 多用户接收机

• 发表时间: 2005
• 期刊: Proc. on IEEE International Symposium on Circuits and Systems (ISCAS2005)
• 作者: Tjitrostwarno C.B.;Fukasawa A.;Takizawa Y.
• 通讯作者: Takizawa Y.

Multi-user Detection by Sequential Interference Canellation for W-CDMA

W-CDMA 的顺序干扰消除多用户检测

• 发表时间: 2007
• 期刊: WSEAS : Advances in Systems Science : Electrical and Computer Engineering Series
• 作者: H.Nakano;A.Fukasawa;Y.Takizawa
• 通讯作者: Y.Takizawa

Enhancement of the W-CDMA Scheme based on Parallel Matched Filters

基于并行匹配滤波器的W-CDMA方案的增强

• 发表时间: 2005
• 期刊: WSEAS Transactions on Communications Issue 5, Vol.4
• 作者: Tani S.;Tjitrosoewarno C.B.;Sugihara H.;Fukasawa A.;Takizawa Y.
• 通讯作者: Takizawa Y.