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Rescale the TX filter for M17.

This commit is contained in:
Jonathan Naylor 2020-10-15 09:40:35 +01:00
parent f2d2033733
commit 60f87072ba
2 changed files with 5 additions and 4 deletions
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7
M17TX.cpp
View File

@ -24,9 +24,10 @@
#include "M17Defines.h"
// Generated using rcosdesign(0.5, 8, 5, 'sqrt') in MATLAB
static q15_t RRC_0_5_FILTER[] = {0, 0, 0, 0, -147, -88, 72, 220, 223, 46, -197, -285, -79, 334, 623, 390, -498, -1691, -2363, -1556,
1284, 5872, 11033, 15109, 16656, 15109, 11033, 5872, 1284, -1556, -2363, -1691, -498, 390, 623, 334,
-79, -285, -197, 46, 223, 220, 72, -88, -147}; // numTaps = 45, L = 5
static q15_t RRC_0_5_FILTER[] = {0, 0, 0, 0, -290, -174, 142, 432, 438, 90, -387, -561, -155, 658, 1225, 767,
-980, -3326, -4648, -3062, 2527, 11552, 21705, 29724, 32767, 29724, 21705,
11552, 2527, -3062, -4648, -3326, -980, 767, 1225, 658, -155, -561, -387, 90,
438, 432, 142, -174, -290}; // numTaps = 45, L = 5
const uint16_t RRC_0_5_FILTER_PHASE_LEN = 9U; // phaseLength = numTaps/L
const q15_t M17_LEVELA = 1683;

2
SerialPort.cpp
View File

@ -106,7 +106,7 @@ const uint8_t MMDVM_DEBUG5 = 0xF5U;
#define HW_TYPE "MMDVM"
#endif
#define DESCRIPTION "20201014 (D-Star/DMR/System Fusion/P25/NXDN/M17/POCSAG/FM)"
#define DESCRIPTION "20201015 (D-Star/DMR/System Fusion/P25/NXDN/M17/POCSAG/FM)"
#if defined(GITVERSION)
#define concat(h, a, b, c) h " " a " " b " GitID #" c ""