diff --git a/agc.c b/agc.c
index dc42328..88b9905 100755
--- a/agc.c
+++ b/agc.c
@@ -10,6 +10,8 @@
 void AGC_Init(agc_t *pObj, uint32_t windowLength, radio_float_t w_init)
 {
 	pObj->w = w_init;
+	pObj->w_max = 4;
+	pObj->w_min = 0;
 	SlidingMinMaxInit(&pObj->slMax, windowLength, (radio_float_t)1E12, 1);
 }
 
@@ -31,6 +33,14 @@ void AGC_Process(agc_t *pObj, radio_float_t x, radio_float_t mu, radio_float_t t
 void AGC_Train(agc_t *pObj, radio_float_t e, radio_float_t mu)
 {
 	pObj->w += mu*e;
+	if (pObj->w > pObj->w_max)
+	{
+		pObj->w = pObj->w_max;
+	}
+	if (pObj->w < pObj->w_min)
+	{
+		pObj->w = pObj->w_min;
+	}
 }
 
 radio_float_t AGC_GetWeight(agc_t *pObj)
diff --git a/agc.h b/agc.h
index 6e4631c..cc97ad4 100755
--- a/agc.h
+++ b/agc.h
@@ -12,6 +12,8 @@
 typedef struct _agc_t
 {
 	radio_float_t w;
+	radio_float_t w_max;
+	radio_float_t w_min;
 	sl_minmax_t slMax;
 } agc_t;