Sine wave- missing samples

architecture Behavioral of fsk is
signal i : integer := 0;
signal k : integer := 0;
signal b : std_logic := '0';
signal o_dummy : integer := 0;
signal temp : std_logic := '1';
signal j : integer range 0 to 249;
signal c : integer := 0;
signal c1 : integer := 0;
signal c2 : integer := 0;
type array_int is array (0 to 249) of integer;
type array_in is array (0 to 124) of integer;
signal carrier1 : array_int := (512,524,537,550,563,576,588,601,614,626,639,651,663,676,688,700,711,723,735,746,758,769,
780,791,801,812,822,832,842,852,861,871,880,888,897,905,913,921,929,936,943,950,956,962,968,974,979,984,989,993,997,1001,1005,
1008,1011,1013,1016,1018,1019,1021,1021,1022,1022,1022,1022,1021,1021,1019,1018,1016,1013,1011,1008,1005,1001,997,993,989,
984,979,974,968,962,956,950,943,936,929,921,913,905,897,888,880,871,861,852,842,832,822,812,801,791,780,769,758,746,735,
723,711,700,688,676,663,651,639,626,614,601,588,576,563,550,537,524,512,500,487,474,461,448,436,423,410,398,385,373,361,348
,336,324,313,301,289,278,266,255,244,233,223,212,202,192,182,172,163,153,144,136,127,119,111,103,95,88,81,74,68,62,56,50,
45,40,35,31,27,23,19,16,13,11,8,6,5,3,3,2,2,2,2,3,3,5,6,8,11,13,16,19,23,27,31,35,40,45,50,56,62,68,74,81,88,95,103,111,119,
127,136,144,153,163,172,182,192,202,212,223,233,244,255,266,278,289,301,313,324,336,348,361,373,385,398,410,423,436,448,
461,474,487,500);
signal carrier2 : array_in := (512,537,563,588,614,639,663,688,711,735,758,780,801,822,842,861,880,897,913,929,943,
956,968,979,989,997,1005,1011,1016,1019,1021,1022,1022,1021,1018,1013,1008,1001,993,984,974,962,950,936,921,905,888
,871,852,832,812,791,769,746,723,700,676,651,626,601,576,550,524,500,474,448,423,398,373,348,324,301,278,255,233,212
,192,172,153,136,119,103,88,74,62,50,40,31,23,16,11,6,3,2,2,3,5,8,13,19,27,35,45,56,68,81,95,111,127,144,163,182,202,223,
244,266,289,313,336,361,385,410,436,461,487);
begin
o <= o_dummy;
process(clk)
begin
if rising_edge(clk) then
i <= i + 1;
if i < 2000 then
b <= '1';
elsif i < 4000 then
b <= '0';
else
i <= 0;
end if;
if j = 249 then
j <= 0;
else
j <= j + 1;
c1 <= carrier1(j);
end if;
if k = 124 then
k <= 0;
else
k <= k + 1;
c2 <= carrier2(k);
end if;
if b = '0' then
o_dummy <=c1;
else
o_dummy <= c2;
end if;
end if;
end process;
end Behavioral;