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commit dab54b91783d5197e0129de950a705e2da2a4cb9 Author: Tom Tsou tom.tsou@ettus.com Date: Fri Jul 1 00:10:31 2016 -0700
trx: Enable EGPRS handling through burst lengths
Existing interfaces are coded with the implicit expectation of using a burst sequence length of 148, which is constant with GSM and GPRS. That changes with EGPRS, where the burst length may be 444 due to the use of 8-PSK instead of GMSK modulation.
Setup the interface to accept and return a length value with the burst sequence. This allows 444 length bit vectors to/from the EGPRS decoder/encoder. Length is explicitly used as a identifier for 8-PSK vs. GMSK modulated sequences.
Change-Id: I90b46b46b11b6ce280e7f8232d5a2fccec2d4f18 Signed-off-by: Tom Tsou tom.tsou@ettus.com
http://cgit.osmocom.org/osmo-bts/commit/?id=9407e644b0246fadec74a45faeedb570...
commit 9407e644b0246fadec74a45faeedb570a0c04c6b Author: Tom Tsou tom.tsou@ettus.com Date: Wed Jul 6 13:29:55 2016 -0700
trx: Add EGPRS coding and decoding procedures
Handles uplink decoding and downlink encoding procedures for MCS 1-9. Includes Type 1, 2, and 3 headers and tables from 3GPP TS 44.060 in order to independently recover coding and puncturing scheme (CPS) parameters for each coded message.
Change-Id: I0f059ae34c6f36179553cbc972f8becf8179eb55 Signed-off-by: Tom Tsou tom.tsou@ettus.com
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Summary of changes: include/osmo-bts/scheduler.h | 12 +- include/osmo-bts/scheduler_backend.h | 43 +- src/common/scheduler.c | 26 +- src/osmo-bts-trx/gsm0503_coding.c | 1016 +++++++++++++++++++++++++++++++++- src/osmo-bts-trx/gsm0503_coding.h | 22 + src/osmo-bts-trx/scheduler_trx.c | 159 ++++-- src/osmo-bts-trx/trx_if.c | 31 +- src/osmo-bts-trx/trx_if.h | 2 +- 8 files changed, 1210 insertions(+), 101 deletions(-)
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