Initial import

git-svn-id: http://moon:8086/svn/software/trunk/libsrc/radio@1 b431acfa-c32f-4a4a-93f1-934dc6c82436
2014-07-19 07:44:42 +00:00
commit 290fd5f5e0
36 changed files with 13976 additions and 0 deletions
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+// --------------------------------------------------------------
+#ifndef EQUALIZER_H
+#define	EQUALIZER_H
+
+#include "radio_types.h"
+#include "real.h"
+#include "cpx.h"
+
+// --------------------------------------------------------------
+#define CEF_MODE_NOP		0
+#define CEF_MODE_CMA		1
+#define CEF_MODE_DD			2
+#define CEF_MODE_EQ_UPD		3
+
+// --------------------------------------------------------------
+// Types
+// --------------------------------------------------------------
+typedef struct _eq_cpx_t
+{
+	uint32_t N;
+	cpx_t *pX, *pW;
+	cpx_t *pW_conj;
+
+} eq_cpx_t;
+
+typedef struct _cma_t
+{
+	uint32_t N, M;
+	eq_cpx_t eq;
+	radio_float_t Px, Px_last;
+
+} cma_t;
+
+typedef struct _dfe_cpx_t
+{
+	uint32_t N, N_ff, N_fb;
+	eq_cpx_t eq;
+
+} dfe_cpx_t;
+
+typedef struct _rls_t
+{
+	uint32_t N, M;
+	cpx_t *pX, *pW, *pZ, *pR, *pT;
+	radio_float_t *R, *T, *T2, *z, *w, *x;
+
+} rls_t;
+
+// --------------------------------------------------------------
+#ifdef __cplusplus
+extern "C" {
+#endif
+// --------------------------------------------------------------
+// Functions
+// --------------------------------------------------------------
+// Helpers
+void CoeffComplexUnitAt(cpx_t *pW, uint32_t N, uint32_t dly);
+void CoeffComplexConv(cpx_t *pSrc, cpx_t *pDst, uint32_t N, uint32_t dly);
+
+// General Equalizer
+void EQComplexInit(eq_cpx_t *pObj, uint32_t N);
+void EQComplexFree(eq_cpx_t *pObj);
+cpx_t EQComplexProcess(eq_cpx_t *pObj, cpx_t x);
+
+// CMA Blind Adaption (uses EQComplex and LMSUpdate)
+void CMAInit(cma_t *pObj, uint32_t ntaps);
+void CMAFree(cma_t *pObj);
+cpx_t CMAProcess(cma_t *pObj, cpx_t x);
+void CMATrainGodard(cma_t *pObj, cpx_t sym_s_eq, radio_float_t mag_h, radio_float_t R2, radio_float_t mu);
+
+// MMA
+void MMATrain(cma_t *pObj, cpx_t sym_s_eq, cpx_t R, radio_float_t mu);
+void SMMATrain(cma_t *pObj, cpx_t sym_s_eq, radio_float_t mag_h, cpx_t R, radio_float_t mu);
+
+// DFE Decision Directed Adaption (uses EQComplex and LMSUpdate)
+void DFEComplexInit(dfe_cpx_t *pObj, uint32_t K);
+void DFEComplexFree(dfe_cpx_t *pObj);
+cpx_t DFEComplexProcess(dfe_cpx_t *pObj, cpx_t xs, cpx_t xh);
+void DFEAdaptLMS(dfe_cpx_t *pObj, cpx_t e, radio_float_t mu);
+
+// LMS Adaption
+void LMSUpdateWeigths(eq_cpx_t *pObj, cpx_t e, radio_float_t mu);
+
+// RLS Adaption
+void RLSInit(rls_t *pObj, uint32_t N, uint32_t M);
+void RLSFree(rls_t *pObj);
+cpx_t RLSProcess(rls_t *pObj, radio_float_t i, radio_float_t q);
+radio_float_t RLSUpdate(rls_t *pObj, radio_float_t rho, radio_float_t mu, radio_float_t y, radio_float_t d);
+
+// --------------------------------------------------------------
+#ifdef __cplusplus
+}
+#endif
+
+// --------------------------------------------------------------
+#endif // EQUALIZER_H