Mimo Computer System And Overview

Project and Seminar Material For Electrical Electronics Engineering EEE

Project and Seminar Material For Electrical Electronics Engineering EEE


Abstract


The past decade has shown distinct advances in the theory of MIMO techniques for Wireless communication systems. Now, the time has come to demonstrate this Progress in terms of applications, where the intermediate step towards a customized Product consists in more or less rapid “prototyping “.

Due to the multitude of different Algorithmic approaches. I.e. beam forming, space-time coding, spatial multiplexing, and different standards, i.e. UMTS, WLAN’s, an ideal prototyping platform requires a High degree of flexibility and modularity in order to be qualified for a wide range of potential applications.

The aim of this contribution is to give an overview about the challenges, the rich variety and the usefulness of such MIMO hardware platform


Table Of Content


Preliminary Page(s)

  • Title Page
  • Approval Page
  • Dedication
  • Acknowledgement
  • Abstract
  • Table Of Content

Chapter One

  • 1.0 Introduction
  • 1.1 General Consideration About mimo plate
  • 1.2 Types Of Mimo
  • 1.3 How Mimo Works

Chapter Two

  • 2.0 Literature Review

Chapter Three

  • 3.0 Commercially Available Tools
  • 3.1 Requirement
  • 3.2 Five One Approach
  • 3.3 Design Example
  • 3.4 System Implementation
  • 3.5 Mimo OFDM
  • 3.6 Amplitude of Digital Signal Device

Chapter Four

  • 4.0 Conclusion
  • 4.1 Recommendation
  • 4.2 References

Chapter One


1.0 Introduction

Without any doubt MIMO techniques count to the few emerging key technologies for wireless communications. The number of yearly publications in this area is tremendous and meanwhile it is almost impossible to keep an overview about the numerous proposed algorithms. Moreover, the number of research teams worldwide is astonishingly high. For example, only in Europe more than 100 scientific and industrial organizations are performing serious research in multiple antenna techniques.

Interestingly, although multiple antenna techniques are so auspicious,no relevant breakthrough in terms of highly successful MIMO products has been observed yet. Intuitive simple reasons are high MIMO complexity as well as critical cost issues When trying to push the promising MIMO theory towards practice. Taking both reasons into account requires that algorithm testing has to be performed on a very flexible and modular MIMO hardware platform where significant insights with the respect to cost issues can be obtained in parallel.

This goal can be briefly denoted by rapid MIMO prototyping and is the aim of this contribution to shed some light on this topic and related challenges In section 2 general considerations about MIMO platforms will be given in a Consecutive way. Section 3 highlights a universal rapid prototyping methodology, Needed to achieve quick and meaningful results and required to avoid common pitfalls. The final section covers a typical design example and discusses the essential Hardware components from a more fundamental point of view.


1.1 General Consideration About Mimo Plate

IMO platforms for current and future wireless communication can be characterized by a large number of different properties like:

  • Environment (indoor/ outdoor)
  • Wireless standard
  • Carrier frequency
  • Bandwidth
  • Sapling frequency
  • Measurement device, demonstrator, prototype
  • Real time, off-line
  • Number of antennas
  • With or without feedback
  • Single or multiple users
  • Type of modulation
  • Basic algorithms
  • Achievable data rates

Modularity, not all of the listed items can be served satisfactory. Hence, in order to Figure out the relevant properties of such flexible scalable and modular platform, some A-priori thoughts are given in the following. An easy decision can be made regarding the wireless environment of the Experiments: while indoor systems can be even for a small organization or University Tested in reality: significant investigations in outdoor scenarios require a more expensive Mobile equipment. In the following we will primarily focus on indoor scenarios.


1.2 Types Of Mimo

Mimo

involves Space Time Transmit Diversity (STTD), Spatial Multiplexing (SM) and Uplink Collaborative MIMO.

Space Time Transmit Diversity (STTD)

The same data is coded and transmitted through different antennas, which effectively doubles the power in the channel. This improves Signal Noise Ratio (SNR) for cell edge performance.

Spatial Multiplexing (SM)

The “Secret Sauce” of MIMO. SM delivers parallel streams of data to CPE by exploiting multi-path. It can double (2×2 MIMO) or quadruple (4×4) capacity and throughput. SM gives higher capacity when RF conditions are favorable and users are closer to the BTS.

Uplink Collaborative Mimo Link

Leverages conventional single Power Amplifier (PA) at device. Two devices can collaboratively ransmit on the same sub-channel which can also double uplink


1.3 How Mimo Work

  1. MIMO takes advantage of multi-path.
  2. MIMO uses multiple antennas to send multiple parallel signals (from transmitter).
  3. In an urban environment, these signals will bounce off trees, buildings, etc. and continue on their way to their destination (the receiver) but in different directions.
  4. “Multi-path” occurs when the different signals arrive at the receiver at various times.
  5. With MIMO, the receiving end uses an algorithm or special signal processing to sort out the multiple signals to produce one signal that has the originally transmitted data. Multiple data streams transmitted in a single channel at the same time Multiple radios collect multipath signals Delivers simultaneous speed, coverage, and reliability improvements

Chapter Four


4.0 Conclusion

In this contribution an overview is given to prototyping for wireless MIMO systems. Embarking upon general considerations towards a flexible, scalable and modular MIMO platform for indoor scenarios, we proceed with universal methodology and list the relevant issues – Five-ones approach – in order to succeed in rapid MIMO prototyping. Then we focused on a particular design example, explained the challenges and proposed a basic strategy in order to adequately split the numerical load among DSPs and FPGAs. Regarding the analog front-end a standard RF-connection further increases the flexibility of the platform, so that either discretely implemented RF-front-ends, but also RF-chip-based evaluation boards can be easily destroyed.


4.1 Recommendation

We hereby recommend this material to the appropriate authorities to ensure that students of polytechnics and other technological institutions of this country should embark on this type of project always as it will help to coined our knowledge and increase our skills. Since its covers a concise part of Mimo computer systems and overview.


Mimo Computer System And Overview


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