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Feature #1620

OsmoTRX EGPRS PHY

Added by laforge almost 2 years ago. Updated over 1 year ago.

Status:
Closed
Priority:
Normal
Assignee:
Target version:
-
Start date:
02/23/2016
Due date:
% Done:

0%

Spec Reference:

Description

In order to have EGPRS/EDGE working with OsmoTRX (and not just osmo-bts-sysmo), OsmoTRX will need an implementation of the 8PSK modulation/demodulation required for EGPRS.

tx1-power-time.gif - Agilent E4406A power-time (18.4 KB) ttsou, 08/01/2016 11:16 PM

tx1-spectrum-mask.gif - Agilent E4406A spectrum mask (16 KB) ttsou, 08/01/2016 11:16 PM

evm-5db-backoff.png - Agilent E4406A EVM (12.7 KB) ttsou, 08/01/2016 11:16 PM

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History

#1 Updated by laforge over 1 year ago

  • Assignee set to ttsou

#2 Updated by ttsou over 1 year ago

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Implemented and merged.

http://git.osmocom.org/osmo-trx/commit/?id=d325343ecca

Tested with now merged osmo-bts-trx EGPRS MCS implementation.

https://gerrit.osmocom.org/#/c/482/

Verified end-to-end all downlink and uplink MCS levels with Huawei/Quacomm (MDM9200) USB dongle.

Measured passing downlink performance against E4406A.

#3 Updated by laforge over 1 year ago

  • Status changed from Resolved to Closed

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