Mimo Capacity with Csit

Project 2: Capacity of MIMO Channels with Known Channel State Information at Transmitter (CSIT)

Abstract – The multiple-input and multiple-output (MIMO) systems are regarded as one of the most significant research areas in wireless communication. Such systems have the capacity of providing higher data throughput and bandwidth efficiency without additional bandwidth and power requirement compared with conventional single-input and single-output (SISO) systems. This paper reviews the basic background information of MIMO system, and then discusses the capacity of MIMO channels with known channel station information at transmitter (CSIT) under various channel parameters such as channel transfer matrix and the signal-to-noise ratio through waterfilling. The conclusion will be given at the end.

Index Terms – MIMO, CSIT, Fading channels, Channel capacity, Waterfilling.

I. INTRODUCTION

In recent years, multiple antenna systems have attracted great attention owing to the increasing demands of high-rate data transmission and bandwidth efficiency in wireless communication field, and a large number of researches have been deployed on it. Multiple antenna systems are such systems with multiple transmit and receive antennas that can offer a significant capacity gain over the traditional SISO systems [2]. In this report, we consider one of the multiple antenna systems – MIMO system. An MIMO system can be regarded as en extension of smart antenna technology, which is a popular technology that adopts antenna array along with the advanced processing algorithms to improve wireless transmission rate. Smart antenna technology could provide a variety of choice, ranging from the SIMO system to MIMO system, but in this paper only MIMO system is covered. Through the use of smart antenna technology, several benefits could be achieved including array gain, diversity gain, multiplexing gain and interference reduction [3]. On the other hand, within an MIMO system the data stream with...