Which modulation technique is best for the 5G ( MIMO based antenna system) wifi application ? usually OFDM is recommended for this application. Since there is some disadvantages of OFDM.
- OFDM is sensitive to Doppler shift - frequency errors offset the receiver and if not corrected the orthogonality between the carriers is degraded.
- Sensitive to frequency timing issues.
- Possesses a high peak to average power ratio - this requires the use of linear power amplifiers which are less efficient than non-linear ones and this results in higher battery consumption.
- The cyclic prefix used causes a lowering of the overall spectral efficiency.
Dear Dheeraj,
welcome,
What is the best modulation used for 5G is still under investigation but the tendency is to try to find a remedy for the disadvantages of OFDM. The issue of the cyclic prefix is mitigated by the use of filterbank multicarrier FBMC to suppress the sidelobes of the OFDM and thereby one can remove cyclic prefix and thereby increase the bandwidth efficiency.
Please refer to the paper:Article Performance evaluation Of PAPR reduction in FBMC system usin...
Also there are powerful methods to suppress the peak to average power ratio PAPR as treated by the above paper and other papers that you can get from my research list:https://www.researchgate.net/profile/Abdelhalim_Zekry/publications
Best wishes
This also depends on the type of communication mode Uplink or downlink
- Badges
- Science topic