RFUWB LRP vs HRP: PHY Mode Differences Explained
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This page compares UWB LRP PHY vs HRP PHY and mentions the difference between UWB LRP PHY and HRP PHY mode.
Introduction
UWB (Ultra Wideband) supports higher data rates, low power consumption, and multiple access. It offers efficient short-range communication. Hence, it’s used in various applications such as smart homes, smart offices, radar imaging, medical services, and tracking.
UWB uses the 3.1 GHz to 10.6 GHz frequency band for communication. A UWB transmitter uses short pulses, which provides a larger bandwidth. There are various IEEE 802.15.4 standards that define specifications of the PHY layer and MAC layer, which include 802.15.4a-2007, 802.15.4-2011, 802.15.4f-2012, 802.15.4-2015, and IEEE 802.15.4z-2020.
The following table compares the two PHY versions of UWB: LRP and HRP. The physical layer defines modulation schemes, data rates, the number of channels, encoding, interleaving, etc. HRP stands for High Rate Pulse Repetition Frequency, and LRP stands for Low Rate Pulse Repetition Frequency.
UWB LRP PHY vs UWB HRP PHY
| Parameters | UWB LRP PHY | UWB HRP PHY |
|---|---|---|
| Standards | IEEE 802.15.4/802.15.4z | IEEE 802.15.4/802.15.4z |
| Data Rates | 31.25 kbps, 250 kbps, 1 Mbps (IEEE 802.15.4) 2/3/4/5/6/8/10 Mbps (IEEE 802.15.4z) | 110 kbps, 850 kbps, 6.81 Mbps, 27.24 Mbps (IEEE 802.15.4) |
| Peak Pulse Repetition Rate | 2 MHz (IEEE 802.15.4) 4 MHz (IEEE 802.15.4z) | 499.2 MHz |
| Ranging support | Not supported in IEEE 802.15.4 Added this feature in IEEE 802.15.4z | Supported in IEEE 802.15.4 |
| Multi-user interference suppression | Not supported in IEEE 802.15.4 | Supported in IEEE 802.15.4 |
| Modulation | OOK, PPM (IEEE 802.15.4) PBFSK, BPFSK + 8/16/32 PPM (IEEE 802.15.4z) | BPSK + BPM (IEEE 802.15.4) BPSK (IEEE 802.15.4z) |
| Error Correction | SECDED Convolutional (IEEE 802.15.4) | SECDED Convolutional (K=3) Reed-Solomon (in IEEE 802.15.4) Convolutional (K=7) (in IEEE 802.15.4z) |
