CREW offers Open Access

CREW is in continuous Open Access phase to support your experiments free of charge!

Final public event & Globecom tutorial

CREW will present its final results at the Wireless Community event (Leuven, Belgium, 29 October 2015, more info) and organises a hands-on tutorial at Globecom (San Diego, USA, 10 December 2015, more info)

CREW PORTAL: access the CREW facilities

Interested in using the CREW facilities?
[Start here] - [Browse by name] - [Overview images] - [Advanced info] - [WTA GitHub].

Deviations from LTE release 8

As the eNB and UE provide only minimal LTE release 8 (Rel 8) PHY/MAC functionality, it is particularly important to note that the DL frame structure and control channels differ slightly. Differences include:

  • PDCCH is always in the second OFDM-symbol (position is variable according to Rel. 8),
  • PHICH (HARQ Indicator Channel) is not in the first OFDM symbol and has a different structure/content,
  • PCFICH (Control Format Indicator Channel) is not supported, and
  • PBCH (Broadcast Channel) is not supported.

Further, the OFDM scheme is used in the uplink. Also, 5 MHz and 10 MHz mode are not supported, thus the testbed operates in 20 MHz mode only.

An overview of the uplink and downlink processing chains can be seen below:

Uplink and Downlink Processing Chain

 

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