Efficient frequency division multi-service based on DTMB-A systems

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Abstract

An efficient frequency division multi-service allocation is designed to provide high data rates and mobile support for broadcasting communication. The transceiver structure design is based on advanced digital terrestrial multimedia broadcasting (DTMB-A). The fixed service uses a 32 × 1024 fast Fourier transform (FFT) and 256 quadrature amplitude modulation (QAM) to provide the static receivers with high definition programs, while the mobile service is flexibly configured according to the channel characteristics with offset-QAM modulation and the isotropic orthogonal transfer algorithm (IOTA) as the shaping filter. Simulations show 20 dB gain for the out-of-band interference for the fixed service and better performance in the Doppler environment. As a result, this method simultaneously meets the needs of both mobile and fixed receivers.

Keywords frequency division multi-service advanced digital terrestrial multimedia broadcasting (DTMB-A) offset quadrature amplitude modulation (OQAM) isotropic orthogonal transfer algorithm (IOTA)

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Issue Date: 15 February 2014

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	Bo HAO
	Jun WANG
	Zhaocheng WANG

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Bo HAO,Jun WANG,Zhaocheng WANG. Efficient frequency division multi-service based on DTMB-A systems[J]. Journal of Tsinghua University(Science and Technology), 2014, 54(2): 275-280.

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http://jst.tsinghuajournals.com/EN/ OR http://jst.tsinghuajournals.com/EN/Y2014/V54/I2/275

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