Crest Factor Reduction (CFR)

The desire for higher spectrum efficiency and greater user density has led communication systems to increasing use higher order modulation schemes. These modulation schemes approach the channel capacity limit, but are characterised by signals with high peak to average power ratio.

By active control of the transmit signal error vector magnitude (EVM), crest factor reduction can significantly reduce the transmitted waveform peak to average power ratio (PAPR), improving amplifier linearity, efficiency and cost.

Key Features

• Reduces signal peak level to reduce amplifier size and cost
• Multi-stage hybrid peak cancellation architecture
• Suitable for multi-carrier applications with 1-4 carriers
• Modulation agnostic - no signal knowledge required
• Configurable cancellation stages and spectral filter length
• Achieves >70dBc output ACLR.

Performance and Resource Utilization

1. Performance and utilization characteristics are generated using LFE3-70E-8FN484.

Ordering Information

For more information on this IP or for pricing and availability please contact Affarii.