octoBox MPE (Multi Path Emulator) Wireless Testbed
octoBox-MPE module emulates IEEE 802.11n/ac Model B 
corresponding to home and small office environment.
octoBox MPE is a patent-pending module that emulates multipath in a typical indoor environment. MPE can be configured for 1x1, 2x2, 3x3 or 4x4 MIMO-OTA (over the air) operation to test throughput, PER (packet error rate) and other parameters of a link between wireless devices.
- Wi-Fi manufacturers and evaluators often test throughput performance in open air ‘real-life’ environment (e.g. a typical house or office) or using channel emulators.
- octoScope has developed an octoBoxTM based testbed that creates multipath closely approaching the IEEE 802.11n/ac Model B  – emulating home and small office environment.
- octoBox MIMO MultiPath Emulator (MPE) creates multipath inside octoBox by generating reflections with stubs of coaxial cable. A quad multipath emulator fixture supports up to 4-stream MIMO.
- octoBox-MPE has been simulated, prototyped and measured using a VNA in the frequency domain; results IFFT’ed to time domain and compared to IEEE Model B (see below)
- Data throughput tests have been performed by www.smallnetbuilder.com on a 2x2 and a 3x3 802.11ac MIMO configuration demonstrating MIMO gains inside octoBox with equivalent throughput to that measured in a representative home environment.
octoBox-MPE MIMO OTA Testbed Diagram
octoBox-MPE vs. Conventional Fader
||Up to 6GHz and higher
||400 MHz – 6GHz
||Flexible, 160MHz supported
|Bi-directional Over the Air (OTA)
||May require custom channel models, power amplifiers, etc.
|Channel Model Programmability
||Several fixed-channel model modules can be stacked
octoBox MPE, Perspective
octoBox Stackable, Interior