// ***************************************************************************
// ***************************************************************************
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// ***************************************************************************
// ***************************************************************************
// ***************************************************************************
`timescale 1ns/1ns

module qpsk_mod (
  input                   clk,
  input       [ 1:0]      data_input,
  input                   data_valid,
  output      [15:0]      data_qpsk_i,
  output      [15:0]      data_qpsk_q);

  wire    [15:0]    modulated_data_i;
  wire    [15:0]    modulated_data_q;
  wire    [15:0]    filtered_data_i;
  wire    [15:0]    filtered_data_q;

  // output logic
  assign data_qpsk_i = filtered_data_i;
  assign data_qpsk_q = filtered_data_q;

  // instantiations
  QPSK_Modulator_Baseband i_qpsk_mod (
    .in0({6'b0, data_input}),
    .out0_re(modulated_data_i),
    .out0_im(modulated_data_q)
  );

  Raised_Cosine_Transmit_Filter i_tx_filter (
    .clk(clk),
    .reset(),
    .enb_1_1_1(data_valid),
    .In1_re(modulated_data_i),
    .In1_im(modulated_data_q),
    .Out1_re(filtered_data_i),
    .Out1_im(filtered_data_q)
  );

endmodule