1. Presentation Of The Project

The Universal Serial Bus (USB) is a popular interface which allows a low cost and ease of use data transfer, between a host and a peripheral. Originally oriented for slow data rate (1.5Mb/s – 12Mb/s) bus-powered interactive devices, in its USB 1.1 version, the standard evolved continuously to comply with the electronic market requirements. With the USB 2.0 release, the USB implementer’s forum (USB-IF) unleashed high speed data feature (480Mb/s) to access to real time data-consuming applications. Then, the On-The-Go (OTG) supplement arrived and revealed new protocols for portable equipments. As a predictable evolution of the usual USB, the Wireless USB (W-USB) has just been defined this year for the next generation of electronic equipments. Whereas this specification details the overall data flow model of the W-USB and its new protocol layer, it does not describe the new physical interface and its corresponding electrical characteristics. In fact, the W-USB hardware architecture is based on the more general Ultra-WideBand (UWB) radio technology. This last standard, illustrated in the MultiBand OFDM (MB-OFDM) Physical Layer Specification, will be the interesting item of this study case.

2. Exposed Problem

This project is mainly focusing on the hardware implementation of the W-USB radio link. Both transmitter and receiver will be synthesized, at a system-level point of view, under Matlab® environment. First, a USB and OTG general overview will be given. Then, students will be asked to work on both W-USB and MB-OFDM documentations. After giving short presentations on the overall W-USB environment, they will define the hardware key modules of the W-USB interface. Once transmitter and receiver specifications summarized, they will start developing under Simulink®, the behavioral model of the entire radio path. In order to do so, they will use Matlab® integrated Communication and Signal Processing toolboxes. The aim of this project is to correlate the official MB-OFDM specification characteristics with Matlab® simulation results. The interesting point of this study would be the Bit Error Rate depending on the selected binary speed and the antennas distance range.

3. Specifications

• Autonomous work and personal initiatives, team spirit development.
• New standards knowledge (USB and WiMedia).
• Documentation synthesizing and oral presentations (USB, OTG, W-USB and MB-OFDM).
• Software practicing (Matlab® and Simulink®).
• System-level evaluation study (W-USB radio link).

4. Schedule

Here is the schedule concerning the two first months :

• General schedule

Here are the estimated detailed sessions of the two first months :

• Session 1
• Session 2
• Session 3
• Session 4
• Session 5

5. Technical Specifications

• Official USB website

6. Project Diary

• Weekly minutes

7. Final Report And Presentation

7.1. Short Version

• W-USB Report
• W-USB Presentation

7.2. Complete Version

• W-USB Complete Report
• W-USB Complete Presentation