本课程的重要性和要 解决的问题 信息时代的特征 用信息科学和计算机技术的理论 和手段来解决科学、工程和经济 问题 对各种信息进行提取、传输和处 理,必然涉及到信号与系统

一、Z变换的基本概念和基本性质 二、变换的域分析 三、离散系统的系统函数 四、离散系统的频率响应

•拉氏变换的定义——从傅立叶变换到拉氏变换 •拉氏变换与傅氏变换的关系 •拉氏变换的性质，收敛域 •卷积定理(S域) •系统函数和单位冲激响应

本章将学习建立信号与系统的数学描 述与数学表示,借以研究信号与系统分 析中的基本概念及基本性质,为以后各 章的学习打下基础

《OFDM技术开发系列》（英文版） Beyond 3G Wideband wireless data access based on OFDM and dynamic packet assignment

Improving performance of coherent coded It can be shown that if the channel estimates are perfect(a1=a1, a2 OFDM systems using space time transmit a2)diversity can be achieved

IEEE TRANSACTIONS ON COMMUNICATIONS. VOL 50. NO. 1 JANUARY 2002 LDPC-Based Space-Time Coded OFDM Systems Over Correlated Fading Channels: Performance Analysis and Receiver design Ben Lu, Student Member, IEEE, Xiaodong Wang, Member, IEEE, and Krishna R Narayanan, Member: IEEE AbstrackWe consider a space-time coded (STC) orthogonal systems integrate the techniques of antenna array spatial diver-

Space-Time Code Design in OFDM Systems Ben Lu and Xiaodong Wang Department of Electrical Engineering Texas A&M University, College Station, TX 7784 Er-mail:(benlu, wang]@ee. tamu.edu

Transmit Gain Optimization for Space Time block Coding Wireless Systems with Co-channel Interference Nevio benvenuto and Stefano Tomasin Dipartimento di Elettronica e Informatica, Universita di Padova

INFORMATION TO USERS This manuscript has been reproduced from the microfilm master UMl filt the text directly from the original or copy submitted. Thus, some thesis dissertation copies are in typewriter face, while others may be from any type of coMm