AM-compatible digital broadcasting method and system

摘要: A method and system are provided for the transmission reception of a composite radio-frequency (RF) signal including supplemental signal, preferably representing encoded digital information, together with an analog which represents monophonic audio in AM-band. The component may be received by conventional AM-band receivers. In certain embodiments, is single-sideband large-carrier or vestigial-sideband RF includes whose spectrum substantially confined one inner sideband. other baseband combined transmitted upper lower sidebands using nonlinear compatible quadrature amplitude modulation (NC-QAM). Additional signals' occupies outer sidebands. each codeword, part codeword information replicated modulated signals both sidebands, diversity delay between sideband signals.