在美國數位廣播中，已提出HD Radio FM系統，此系統在FM頻帶兩旁同時傳送數位廣播訊號。由於新系統之頻寬較寬，與相鄰FM系統間產生訊號頻譜重疊。這種多重進接干擾，使得數位音訊產生嚴重干擾並無法收聽。因此本論文探討多重進接干擾的解決方法，其中內頻帶訊號設計可以同時傳送數位訊號及FM訊號在同一頻帶內，且彼此不互相干擾；另外我們在音訊編碼上，設計快速且簡單的多位元流訊號，於HD Radio FM數位頻帶上傳送。

HD Radio FM digital audio broadcasting (DAB) system, which conveys digital audio signals simultaneously along with analog audio signals in the frequency modulation (FM) band, has been proposed as a compatible solution to DAB system. Because the frequency band of the new system is wider than the band of FM, the digital signals and the adjacent FM signal will overlap on the spectrum. This multiple access interference will disturb digital audio signals and make it unacceptable. In this thesis, we focus on the solution to multiple access interference between existing systems. We first discuss an in-band signal design scheme that can transmit digital data and analog FM signals simultaneously in the same band without interfering with each other. Then we proposed an alternative scheme to combat the multiple access interference: the simple design of multi-stream transmission in HD Radio FM systems.

[1] W. Hoeg and T. Lauterbach, Digital Audio Broadcasting Principles and Applications. New York: Wiley, 2003
[2] C. Faller, B.-H. Juang, P. Kroon, H.-L. Lou, S. A. Ramprashad, and C-.E. W. Sundberg, “Technical Advances in Digital Audio Radio Broadcasting,” IEEE proceedings, vol. 90, pp. 1303-1333, Aug. 2002.
[3] iBiquity Digital Corporation. [Online]. Available: www.ibiquity.com.
[4] iBiquity Digital Corporation, ”HD RadioTM Air Interface Design Description – Layer 1 FM,” March 2005.
[5] J. R. Detweiler, “Conversion Requirement for AM & FM IBOC Transmission”, iBiquity Digital Corporation.
[6] Jerry C. Whitaker, Editor-in-Chief, “IBOC FM Digital Radio System”, Chapter 2-5.
[7] B. Chen and C.-E. W. Sundberg, “Complementary punctured pair convolutional codes for digital audio broadcasting,” IEEE Trans. Communication, vol. 48, pp. 1829–1839, Nov. 2000.
[8] J. N. Laneman and C.-E.W. Sundberg, “Soft selection combining for terrestrial digital audio broadcasting in the FM band,” IEEE Trans. Broadcast., vol. 47, pp. 103–114, June 2001.
[9] R.Maerkle, C.-E.W. Sundberg,” Turbo Codes for Hybrid In Band On Channel Digital Audio Broadcasting systems”, Conf. Rec. IEEE Globecom, pp. 941-945, Austin, Texas, Nov 2001.
[10] 方俊仁, “Signals Design of Tertiary Sideband in Hybrid IBOC AM Systems.”
[11] 詹慧蘋, “Design of In-Band Signals in Hybrid IBOC FM DAB Systems.”
[12] C.-E. W. Sundberg, D. Sinha, D. Mansour, M. Zarrabizadeh, and J. N. Laneman, “Multistream hybrid in-band-on-channel systems for digital audio broadcasting in the FM band,” IEEE Trans. Broadcast., vol. 45, pp. 410–417, Dec. 1999.
[13] C.-E. W. Sundberg, D. Sinha, and H. Lou, “Multi-stream transmission for spectrally and spatially varying interference AM-DAB channels,” in Proc. IEEE Communications Conf., Helsinki, Finland, pp. 1654–1659, June 2001.
[14] G. Kubin and W.B. Kleijn, “Multiple-description coding (MDC) of speech with an invertible auditory model,” in Proc. IEEE Workshop Speech Coding, Porvoo, Finland, pp. 81-83, June 1999.
[15] R. L. Cupo, M. Sarraf, M. Shariat, and M. Zarrabizadeh, “An OFDM all-digital in band-on-channel (IBOC) AM & FM radio solution using the PAC encoder,” IEEE Trans. Broadcast., vol. 44, pp. 22–27, Mar. 1998.
[16] D. Sinha, J. D. Johnston, S. Dorward, and A. Quackenbust, “The perceptual audio coder(PAC),” in The Digital Signal Processing Handbook, New York: IEEE Press, 1998, pp. 42.1-42.18.
[17] M.T. Orchard, Y. Wang, V. Vaishampayan, and A.R. Reibman, “Redundancy rate-distortion analysis of multiple description coding using pairwise correlating transforms,” in Proc. IEEE Int. Conf. Image Processing, Santa Barbara, CA, vol. I, pp. 608-611, Oct. 1997.
[18] R. Arean, J. Kovacevic, and V.K. Goyal, “Multiple description perceptual audio coding with correlating transforms,” IEEE Trans. Speech Audio Processing, vol. 8, no. 2, pp. 140-145, Mar. 2000.
[19] Y. Wang, M.T. Orchard, V. Vaishampayan, and A.R. Reibman, “Multiple description coding using pairwise correlating transforms,” IEEE Trans. Image Processing, vol. 10, pp. 351-366, Mar. 2001.