1 Reply Latest reply on Dec 28, 2015 11:31 PM by rohitk_

    Link Quality Evaluation

      Hi All,

      I am very new in PSoC and of course for this BLE module. I am going to experiment the module for its communication link quality in a certain environment. I am thinking to evaluate the BER/PER and the signal quality. As for the signal quality, I can think of it. However, for BER/PER evaluation, I have no idea about it. As far as I search on this site, there is no reference about it. If you have any suggestion about it, I would really appreciate it. Or if there are any other link quality parameters that I can evaluate,  that also will be good.




        • 1. Re: Link Quality Evaluation



          One of the accepted ways to evaluate link is to use the BLE devices in Direct Test Mode (or DTM). In this mode, the BLE controller communicates with External Tester using HCI command/response. Using the commands, you can send a certain data from tester to device under test and then compare the data received to find the performance or link quality parameters. There are already various testers outside which have a pre-defined set of test commands which are run automatically and give you the complete link analysis at the end. Rohde & Schwarz CBT testers are few of them.


          For PSoC 4 BLE/PRoC BLE, you can enable this mode by selecting HCI in the BLE component. There is already an example project as part of the CY8CKIT-042-BLE Kit content (download the installer from www.cypress.com/CY8CKIT-042-BLE ) and allows HCI commands/responses to be transferred over UART. Refer to the Kit user guide, section 4.6 (http://www.cypress.com/file/138606/download ) for more details.