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An OFDM all digital in-band-on-channel (IBOC) AM and FM radio solution using the PAC encoder

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4 Author(s)
Cupo, R.L. ; Bell Labs., Lucent Technol., Holmdel, NJ, USA ; Sarraf, M. ; Shariat, M. ; Zarrabizadeh, M.

The advances in digital communications and compression algorithms have made more efficient and more robust transmission schemes possible. Radio broadcast systems have not fully utilized these advances to their benefit. All digital robust radio broadcast systems for the AM and the FM band are proposed. The proposed systems are based on orthogonal frequency division multiplexing (OFDM) technology in conjunction with PAC for both the AM and the FM bands. The Perceptual Audio Coder (PAC) developed by Bell Laboratories compresses audio signals very efficiently with CD-like quality at 96 kbps and stereo FM-like quality at 48 kbps. These are rates achievable with 200 kHz and 30 kHz bandwidths available per FM and AM station respectively. No new spectrum is required since the digital signals are transmitted within the current allocated FCC masks. In an FM channel, a wide-band data subchannel can be provided in addition to the 96 kbps error protected PAC audio information

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Broadcasting, IEEE Transactions on  (Volume:44 ,  Issue: 1 )