2G Raw BitRate Calculation

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Jul 14, 2015, 12:02:09 PM7/14/15

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Hi,

Kindly have a glance at these links.

From what I had understood:

1. MSK signal is not spectrally efficient for a narrow BW channel.

2. we can choose a suitable Gaussian filter to suppress the side lobes and reach a desired cut-off frequency.

3. By varying the Bandwidth Time product(BT) of Gaussian filter, we could arrive at a desired cutoff frequency f-3dB.

4. In GSM, The BT is choosen to be 0.3 and the cut-off frequency is 81.25kHz.

5. Raw Bit rate = f-3dB/BT

= 81.25 * 10^3 / 0.3

= 270.83333 kHz.

Kindly share your thoughts on this.

Best Regards,

C.Gopinath

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