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Transceiver52M: Fix SSE convolution shuffle register

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An errant shuffle register value used in complex-complex convolution
causes distorted correlation peak-to-average values for certain TSC
values. The error effect varies for different TSC sequences with the
most noticeable effect of degraded detection on TSC 1 and no effect on
TSC 7.

Signed-off-by: Thomas Tsou <tom@tsou.cc>
This commit is contained in:
Thomas Tsou
2014-06-03 14:00:52 -04:00
committed by Michael Iedema
parent e9489856ca
commit 1732696349
1 changed files with 1 additions and 1 deletions
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Transceiver52M/convolve.c
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@@ -443,7 +443,7 @@ static void sse_conv_cmplx_8n(float *x, float *h, float *y, int h_len, int len)
m4 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(0, 2, 0, 2));
m5 = _mm_shuffle_ps(m0, m1, _MM_SHUFFLE(1, 3, 1, 3));
m6 = _mm_shuffle_ps(m2, m2, _MM_SHUFFLE(0, 2, 0, 2));
m6 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(0, 2, 0, 2));
m7 = _mm_shuffle_ps(m2, m3, _MM_SHUFFLE(1, 3, 1, 3));
/* Load (unaligned) input data */