When it comes to wireless technologies, TRABUS is changing the conversation.

A spectrally efficient peer-to-peer (SEPP) technology that will revolutionize the wireless industry. This innovative technology allows for instant deployment of a communications network that enables simultaneous wireless conversations without reliance on cell towers or wireless infrastructure.


SEPP was designed for instant deployment anywhere. SEPP is a self-organizing, high-throughput wireless network that operates independently of backbone infrastructure such as cell towers and external sources of timing and position. Messages are routed through wireless peer-to-peer (or device-to-device) links. Routes reconfigure in real-time as devices and links join and leave the network. This makes SEPP robust because there is no single point of failure. Furthermore, SEPP is reliable even in harsh RF environments where individual link quality may be poor. Peer-to-peer links allow for localized communication reserving frequency bands over much smaller spatial areas compared to conventional cellular networks. These attributes make SEPP ideal for the applications of disaster relief, vehicle-to vehicle, vehicle-to-everything, tactical missions, extending cellular networks and sensor networks.

    Spectrally Efficient

    Spectral efficiency is crucial in a world where the rapid increase of RF devices is making RF frequency bands ever more crowded. SEPP is designed to accommodate multiple wireless links on the same frequency at the same time. SEPP’s patented technology fully utilizes multiple transmit and receive antennas to cancel interfering links while maintaining link quality for desired transmissions. In the SEPP protocol, devices transmit control messages to collectively determine channel access, transmit power and phase of transmitting antennas. Then, receiving devices linearly combine received waveforms from multiple antennas to optimally cancel interference of other links on the network. SEPP’s patented algorithms can be implemented digitally and significantly reduce the required overhead of multi-antenna communication, separating SEPP from the competition.

      Ready for Modern Wireless Handsets

      SEPP’s technology readiness goes far beyond patents and designs on paper. TRABUS engineers have implemented SEPP on a network of software defined radios (SDRs). The implementation uses orthogonal frequency division multiplexing (OFDM) with many of the same specifications as 4G LTE. The prototype network supports multiple two-way video calls. Using the novel interference cancelling technique, data packets from different links can share the same frequency band and time slot. The SEPP protocol can be implemented digitally and use chipsets and antennas already found on modern wireless handsets.