Thanks for the useful info, Is there some reference doc which deals in details on this timings... ? <br><br><div class="gmail_quote">2011/1/8 Fadil Berisha <span dir="ltr">&lt;<a href="mailto:f.koliqi@gmail.com">f.koliqi@gmail.com</a>&gt;</span><br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Bit rate duration is determined from physical channel throughput for<br>
particular modulation schema. GMSK modulation is used with constant BT<br>
= 0.3, where  B is the 3dB bandwidth of the theoretical Gaussian<br>
filter and T is duration of input data bit. Knowing B, we calculate<br>
1/T = 1625/6 ksymb/s  or approximately 270.833 ksymb/s. From here bit<br>
duration is 3.69.. ì s.<br>
<br>
Voice signal is processed in time intervals of 20ms = s/50. For that<br>
period of time throughput is [(1625/6) x (1000/50)] symbols. Because<br>
this number is fractional, let look at 6 times longer time interval.<br>
For time interval 120ms throughput is [1625 x 20] symbols or [13 x 125<br>
x 20] symbols or [26 x 1250] symbols or [26 x 8 x 156.25] symbols.<br>
<br>