Howtosignalprocessing
- What are the disadvantages of GMSK?
- Why GMSK is better than QPSK?
- What is the bandwidth of GMSK modulation?
- Why is GMSK modulation preferred in GSM?
What are the disadvantages of GMSK?
The disadvantage of Gaussian Minimum Shift Keying (GMSK)
It requires more complex channel equalization algorithms, such as an adaptive equalizer at the receiver. It has high power consumption.
Why GMSK is better than QPSK?
Important Difference Between QPSK and GMSK QPSK also usually incorporates baseband pulse shaping: Thus, shaped QPSK has a variable amplitude (envelope) and hence requires a linear PA. GSMK, on the other hand, has a constant envelope and can operate with nonlinear PAs.
What is the bandwidth of GMSK modulation?
GMSK – Gaussian minimum shift keying – is the original circuit switched GSM modulation system, allowing the GSM radio channel to be modulated at a data rate of 271kb/s whilst keeping the radio channel within a 200kHz bandwidth.
Why is GMSK modulation preferred in GSM?
GMSK is a special case of MSK modulation. The phase of the transmitted signal in GMSK scheme is continuous and smoothed by a Gaussian filter. This results in more compact spectrum than MSK and enables better utilization of the available frequency spectrum, at the expense of increased inter-symbol interference (ISI).
