Integer frequency offset estimation and preamble identification in WiMAX systems
- Resource Type
- Conference
- Authors
- Morelli, Michele; Marchetti, Leonardo; Moretti, Marco
- Source
- 2014 IEEE International Conference on Communications (ICC) Communications (ICC), 2014 IEEE International Conference on. :5610-5615 Jun, 2014
- Subject
- Communication, Networking and Broadcast Technologies
Indexes
Maximum likelihood estimation
Timing
Joints
Training
WiMAX
- Language
- ISSN
- 1550-3607
1938-1883
In this work we investigate the joint estimation of the integer carrier frequency offset (CFO) and the preamble index in a multicarrier system compliant with the WiMAX specifications. Since the exact ML solution is prohibitively complex in its general formulation, a suboptimal algorithm is developed to provide a reasonable trade-off between estimation accuracy and processing load. Compared to existing alternatives, the resulting scheme exhibits improved accuracy and reduced sensitivity to residual timing errors.