Do you copy?
When it comes down to life or death circumstances, voice communications reliability can mean the difference between a successful day and a tragedy for first responders. Agencies utilizing simulcast must be informed on Time-delay interference.
Simulcast radio systems operate on spectrum efficiently and cover large geographic areas by networking sites and making the use of multiple-site radio systems as easy for an end user as a single-site system. Time-delay interference, however, is a common issue among many simulcast systems.
Radio officers may notice that some systems work better when certain transmitters are turned off, which is a sign that your system is in need of on-site optimization.
When more than one site broadcasts the same signal, the areas where signals overlap can receive signals at slightly different times. When the two transmissions arrive at the same amplitude but with different timing, the area is considered "non-capture." In otherwords, neither transmitter is able to "capture" the user's radio because the two transmissions are canceling each other out at the same amplitude but at slightly different times. This interference is also known as delay spread.
Visit Urgent Communications to learn how to minimize the effects of TDI.
Acceptable interference levels are dictated by system design, system type, and expected performance. Newer generation digital radios are able to tolerate more delay without causing unacceptable interference. If your system is struggling with interference issues or disputes, contact us at EMRConsults.com.
Next: Importance of video backhaul over LTE.
No comments:
Post a Comment