ULTRA-WIDE BAND

Ultra-Wide Band

[Name of College]

Abstract

In recent years the use of wireless communications has shaped our environment greatly, however, these developments also brought new problems. Transmission of data using the Ultra Wide Band technology (UWB short) promise to overcome these hurdles, however by using an ultra-wide frequency spectrum and a very low transmission power of UWB data can be transmitted in parallel to the previously used frequencies. In this study, we have firstly examined the basic principles of UWB and assessed its feasibility for practical applications in mobile communication networks. However in the practical application it is found that UWB could be proven as an effective mobile communication tool, due to several factors but the most important that have been outlined in this study is low energy consumption.

Ultra Wide Broadband

Introduction

In recent years the use of wireless communications has shaped our environment greatly. Today's daily life would be inconceivable without digital transmission techniques no longer like GSM, UMTS, DVB, wireless LAN or Bluetooth. However, these developments also brought new problems. Thus in recent years through the constantly growing spectrum scarcity and the sharp policy in many countries, commercial carrier frequencies have become more expensive and the use of license-free bands due to heavy congestion are considered inefficient. Transmission of data using the Ultra Wide Band technology (UWB short) promise to overcome these hurdles, however by using an ultra-wide frequency spectrum and a very low transmission power of UWB data can be transmitted in parallel to the previously used frequencies (Hoyos, Arce and Sadler, 2003). Furthermore, this should be achieved in the so-called wireless personal networks (WPANs) data rates of up to 2 Gbps. In this study the basic principles for UWB technology and the associated modulation methods are explained. Furthermore, important consortia and standards bodies are described and it is given an insight into current practical applications of UWB and finally, illuminated by a brief look into the future, current trends. 

Ultra-Wide Band (UWB)

Ultra-Wide Band also known as radio technology when they cover a spectrum of more than 500 MHz bandwidth or their covers at least 0.2 times the average frequency, the minimum bandwidth for this case is calculated using the following equation. 

Here, the upper limit frequency f H and the lower limit frequency f L of the spectrum are involved. For wireless transmission of data it is necessary in most current narrow-band transmission method (a so-called carrier frequency) to send information before it applied to the carrier wave and modulated with a selected process. In no UWB frequency modulations this kind of transmission of information is used even in the simplest case, the data to be transmitted are converted into pulses (Schaumann and Valkenburg, 2001). The Ultra Wide Band technology however is not only used for data transmission but also used for radar and sensor systems. Due to the extremely short pulse lengths, which move in the nanosecond range this cap of accuracy is much higher than traditional radar techniques can be achieved. 

Signals

The pulses generated in the most popular transmission technology for UWB is the impulse radio method which should have an exceptionally high slope. Only then it would be possible to achieve a ...