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移动通信网络 Mobile Communication Network
发表时间:2012-02-29 阅读次数:4849次

蜂窝移动通信网络(Cellular Mobile Communication Network)

 

智能手机的大量普及和移动应用的广泛使用,加速了数字洪水时代的到来。移动业务从传统的人人通信,扩展到了人机通信,机器与机器通信,使得移动设备数目快速增长。此外,业务的多样性也对未来蜂窝移动通信提出了智能、宽带和更高频谱利用率的挑战。

The growing popularity of smart phones and wide use of mobile applications have accelerated the explosion of digital information. Mobile services have been extended from human-to-human communication to human-to-machine, or even machine-to-machine communications, which has resulted in a vast growth of mobile devices. Furthermore, the diversity of services brings new challenges for future cellular mobile communications to be even more intelligent, high-speed and spectral efficient.

 

上海交通大学无线通信技术研究所开展了全系统端到端的技术创新和突破,包括:新型无线传输技术、多址技术、跨层优化技术、终端芯片技术、以及终端数据卡/路测仪技术等,形成了新型多址接入技术研究和演示验证硬件平台、TDD高效传输及存储硬件平台、多模可配置软件无线电平台等试验系统。

The IWCT of SJTU has made technical innovations and breakthroughs for wireless E2E solutions, including wireless transmission technology, multiple access techniques, cross-layer optimization, ASIC, data cards and drive test technologies. These technologies have been utilized in multiple experimental systems such as multiple access research & verification platforms, the high efficient storage and transmission platform for TDD systems and multi-mode reconfigurable software radio systems.

 

 

 

1) 无线资源管理创新研究

Innovations on Wireless Resource Management

 

无线资源管理是新一代宽带移动通信系统性能优化的核心技术。面向多样化的传输业务需求和不同的网络构架,开展了OFDMA系统资源分配理论与算法的深入研究,主要创新成果包括:

Wireless resource management plays a key role in the optimization of the next-generation broadband mobile communication systems. We have carried out comprehensive studies on resource allocation in various OFDMA-based networks aiming to provide diverse transmission services. The main contributions are as follows:

 

  • 采用时间分割和对偶分解两种优化方法,提出了支持有时延限制和没有时延限制两种业务同时传输的子载波与功率联合分配最优算法。

Proposed optimal subcarrier and power allocation algorithms using both time-sharing and dual decomposition approaches in OFDMA systems to support delay-constrained and non-delay-constrained traffic simultaneously.

 

  • 首次将基于信息论的物理层安全引入OFDMA系统,提出了最优子载波和功率联合分配算法,保证安全用户的基本保密信息速率,并最大化普通用户的数据信息速率。

Proposed an optimal subcarrier and power allocation algorithm in OFDMA systems to maximize the aggregate information rate of normal users while guaranteeing the basic transmission rate of confidential information for individual secure users.

 

  • 建立了含子载波配对的多维资源联合优化框架,并提出最优算法,极大提升了协作多中继OFDM系统的吞吐量。

Developed a joint optimization framework for subcarrier-pairing, subcarrier-relay assignment and power allocation for throughput maximization in dual-hop cooperative OFDM systems, and proposed the optimal solution.

 

  • 设计了挖掘网络编码增益的OFDMA蜂窝网三时隙TDD上下行传输协议,并提出了基于图论的传输模式选择、中继选择、以及子载波分配的联合优化算法。

Proposed a new 3-slot TDD transmission protocol in relay-assisted bidirectional OFDMA systems that utilizes network coding gain, and developed a graph approach for the joint optimization of transmission mode selection, relay selection and subcarrier assignment.

 

 

 

 

2) 多模可配置实验平台

Multi-mode Reconfigurable Experimental Platform

研究多模式可配置基站,形成了具有实验室演示能力的、基于可配置FPGA+DSP平台的多标准软件无线电试验平台。

We also studied a multi-mode reconfigurable base station and developed an experimental demonstration platform based on configurable multi-standard FPGA+DSP based wireless radio.

 

 

 

 

可配置软件无线电平台

Reconfigurable Software-Defined Radio Platform

 

3) ASIC芯片设计

ASIC Design

在LTE终端关键算法与ASIC设计技术方面,研究了:

We have been dedicated to the study of key algorithms and ASIC design for LTE terminals, including

 

  • 高性能4X2 QAM64空分最大似然检测接收机算法

A highly efficient and maximum-likelihood receiver algorithm for 4X2 QAM64 spatial multiplexing;

 

  • 抑制邻小区干扰的高级干扰抑制接收机算法

An advanced interference mitigation algorithm to suppress interference from neighboring cells;

 

  • 能够保证在极低信噪比条件下接收机的时间和频率同步鲁棒的同步算法

A robust time and frequency synchronization algorithm at extremely low SNR regime;

 

  • 应对各种复杂信道条件的自适应的信道估计算法

Adaptive channel estimation algorithm for complex communication environment.

 

4) 先进的校园无线创新实验网络

Advanced Innovative Wireless Campus Networks

上海交通大学无线所正在搭建移动通信技术创新试验平台。该平台不仅为移动通信的未来智能、协同和异构网络架构下的创新研究成果验证提供了强大的基础,同时为跨领域(如光纤、云计算、多媒体、微电子等)协同创新提供了丰富的资源,更为未来新型移动业务及体验模式创造了一流的环境。

 

The IWCT is developing a wireless campus network for cutting-edge mobile communications research.. The network will not only serve as a solid platform for future mobile communication research, but also provide world-class resources for cross-disciplinary research in the areas of e.g., fiber optics, cloud computing, multimedia, and microelectronic, etc.). It will also create a first-class environment for future mobile services and innovative user experiences.

 

 

 

校园无线创新实验网络示意图

Illustration of Innovative Wireless Campus Networks

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