Cambium Networks ePMP Beam-forming Product line has set the standard for high performance, scalability and reliability in harsh interference environments all at a compelling price. The ePMP 2000/3000 is the next generation Access Point that brings Interference Tolerance to a whole new level with Cambiumâ€™s unique Hypure Technology which combines Intelligent Filtering and Smart Beam-forming. The ePMP 2000 Access Point System consists of a high performance, GPS Synchronised Access Point Radio with Intelligent Filtering, a new compact high performance Access Point Antenna and an optional Smart Beam-forming Antenna.
The Intelligent Filtering of the Access Point works for both receive and transmit. It protects any channel from noise from off-channel interferers with a filter that dynamically moves around the channel. On the transmit side, it protects the RF environment by reducing off-channel transmission noise.
- The Smart Beam-forming capability works to mitigate the effects of on-channel interference. The System learns the locations of each served Subscriber Module and forms a narrow beam towards the desired Subscriber Module while that radio is transmitting in the uplink. This reduces the gain on the uplink for on-channel interferers that are transmitting at an azimuth angle different than the Subscriber Module. Detailed information on beam forming is on the Cambium web site.
Beam-forming algorithms maximise the Received Signal Strength Indication (RSSI) and Error Vector Magnitude (EVM) of the radio uplink
By mitigating the effects of uplink interference, packet retransmissions are kept to a minimum which allows for high throughputs and avoids the extra latency of retransmissions
An increase in throughput and reduction in retransmissions on the uplink can also increase downlink throughputs for TCP traffic which relies on efficient transmission of acknowledgements for optimal performance