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| author | ttsou <ttsou@19bc5d8c-e614-43d4-8b26-e1612bc8e597> | 2013-04-04 23:35:08 +0000 |
|---|---|---|
| committer | ttsou <ttsou@19bc5d8c-e614-43d4-8b26-e1612bc8e597> | 2013-04-04 23:35:08 +0000 |
| commit | bec41039bf2ec07c04a6e8b0b586b085ab9cd74c (patch) | |
| tree | de8c787c525cf3e1d52af6d2bd09cde50fda3a2f /CommonLibs | |
| parent | 2064297aa8ef59dd369b8e76158315ac764ceaa1 (diff) | |
Transceiver52M: Fix calculation of TS correlation for 2 sps and higher
The correlation starting point for normal burst training sequence
calculation should be a scaled value of the same symbol regardless
of the samples-per-symbol used. Use of 2 samples-per-symbols double
the index values, but yields the following outputs, which results
in a late time-of-arrival value at the output of the correlation.
This patch modifies the parameter calculation accordingly.
1 sps parameters
maxTOA = 3
spanTOA = 5;
startIx = 61;
endIx = 87;
windowLen = 26;
corrLen = 7;
2 sps parameters (errant case)
maxTOA = 6;
spanTOA = 10;
startIx = 112;
endIx = 184;
windowLen = 72;
corrLen =13;
2 sps parameters (corrected)
maxTOA = 6;
spanTOA = 10;
startIx = 122;
endIx = 174;
windowLen = 52;
corrLen =13;
Signed-off-by: Thomas Tsou <tom@tsou.cc>
git-svn-id: http://wush.net/svn/range/software/public/openbts/trunk@5183 19bc5d8c-e614-43d4-8b26-e1612bc8e597
Diffstat (limited to 'CommonLibs')
0 files changed, 0 insertions, 0 deletions