Deploying mobile LPWAN networks — outdoors or indoors — usually allows developers to better appreciate a seldom-mentioned “feature” of any LPWAN: dead spots. In a vacuum, an LPWAN network’s coverage area could be plotted as a perfect ellipsoid on a two-dimensional plane. And in a perfect laboratory the radius of the ellipsoid would be the …
Recently, we came across this great paper (link, free PDF) about modeling the impact of multipath on LoRa modulation. Specifically, it models Rayleigh flat fading, which is observed in urban and indoor use-cases. We had just finished testing LoRaWAN vs. Haystack’s LoRa XR2 in an environment with heavy multipath interference (an airport parking garage). The …
Our latest video showing the amazing results here: UPDATE: some technical notes: For both sets of devices we used: Spreading Factor = 1 Coding Rate = 1 Payload = 16 bytes The Haystack XR2 Error Correction used a 1/2 coding rate, which causes data rate to be halved. To control for this variable we set LoRaWAN …
Some quick notes on how Haystack helps in the 868 MHz band in many EU countries: Forward error correction is about more than getting a message to its destination intact. It also allows for faster data rates than would otherwise be practical for unencoded (non-error corrected) data. This is useful not only for extending battery …
How To Improve LoRa In The EU With Better Error Correction Read More »
We announced Haystack XR Mode last spring, and recently announced a major improvement — XR2 — just last month. Stunning progress in the world of LPWAN’s and all HayTag Demo Kits will now include XR2. But forward error correction — the essence of XR — is only part of our error correction capability. The “other …
How We Guarantee Message Delivery over Semtech’s LoRa Read More »
Announcing XR Mode Version 2.0 Some stunning news to share. Earlier this year, we announced an important advance in improving the range performance of Haystack’s DASH7 technology over LoRa — DASH7 XR Mode. Using NASA-derived error correction (and deployed on the New Horizons space probe), we achieved results that were 10–20x better than a comparable …
In the mobile IoT business it is rare to meet a customer that does not prioritize “range” as a purchase criteria. Our announcement of Haystack XR Mode is genereating enthusiastic response not only from users looking for better outdoor range over LoRa, but in indoor environments, too. Out With Yesterday’s Indoor IoT Infrastructure We designed DASH7 to provide an …
Today we declared beta for our newest networking stack for LoRa, DASH7 XR Mode. After months of hard work to improve the wireless range of Semtech’s LoRa LPWAN radio, we are pleased with the results. XR Mode was initially a response to customer asking why gateways and endpoints deployed near ground level achieve a wireless …
