Multi-Frequency Code Systems TRIZ Cases
- Multi-SCS RACH Sequences for Cell Coverage and Timing Resolution
Transmitting separate RACH sequences with varying subcarrier spacings resolves the trade-off between cell coverage area and timing resolution.
- FBMC Receiver Frequency Domain Synchronization
A filter bank multi-carrier receiver uses frequency domain correlation to correct sampling instants via interpolating filters.
- CG Sequence Selection for Low PAPR DMRS Transmission
Selecting computer generated sequences from pre-configured tables to produce demodulation reference signals with low peak to average power ratio.
- OFDM Frequency Offset Estimation Using Coherence Phase Bandwidth
A two-stage OFDM receiver method estimates frequency offsets using periodic training symbols and coherence phase bandwidth correlation.
- Frequency Offset Estimation Using Cyclic Prefix Correlation and Low-Pass Filtering
Cyclic prefix correlation combined with low-pass filtering estimates frequency offset, reducing transmission latency while maintaining measurement precision.
- SRS Configuration for Antenna Switching and Frequency Hopping
Segments SRS configuration into independent parameters to resolve the trade-off between channel estimation accuracy and transmission time.