Efficient frequency division multi-service based on DTMB-A systems
Bo HAO,Jun WANG(),Zhaocheng WANG
Tsinghua University & National Engineering Laboratory for Digital TV (Beijing), Tsinghua National Laboratory for Information Science and Technology (TNList), Department of Electronic Engineering, Tsinghua University, Beijing 100084, China
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.
郝博, 王军, 王昭诚. 基于DTMB-A系统的高效频分多业务[J]. 清华大学学报（自然科学版）, 2014, 54(2): 275-280.
Bo HAO, Jun WANG, Zhaocheng WANG. Efficient frequency division multi-service based on DTMB-A systems. Journal of Tsinghua University(Science and Technology), 2014, 54(2): 275-280.
DVB Document EN 300 744. Framing Structure Channel Coding and Modulation for Digital Television Terrestrial Broadcasting System[S]. Sophia Antipolis: ETSI, 2009.
[2]
Kornfeld M, May G. DVB H and IP datacast-broadcast to handheld devices[J]. IEEE Transactions on Broadcasting, 2007, 53(1): 161-170.
[3]
Uehara M, Takada M, Kuroda T. Transmission scheme for the terrestrial ISDB system[J]. IEEE Transactions on Consumer Electronics, 1999, 45(1): 101-106.
[4]
Xie Q, Wang Z, Yang Z. Simplified soft demapper for APSK with product constellation labeling[J]. IEEE Transactions on Wireless Communications, 2012, 11(7): 2649-2657.
[5]
Proakis J. Digital Communications[M]. 4th Ed. New York: McGraw-Hill, 2001.
[6]
Siohan P, Roche C. Cosine-modulated filter banks based on extended Gaussian function[J]. IEEE Transactions on Signal Processing, 2000, 48(11): 3052-3061.
[7]
Vangelista L. Efficient implementations and alternative architectures for OFDM-OQAM systems[J]. IEEE Transactions on Communications, 2001, 49(4): 664-675.
[8]
Yang Z, Wang X, Wang Z, et al.Improved channel estimation for TDS-OFDM based on flexible frequency-binary padding[J]. IEEE Transactions on Broadcasting, 2010, 56(3): 418-424.
[9]
Strohmer T, Beaver S. Optimal OFDM design for time-frequency dispersive channels[J]. IEEE Transactions on Communications, 2003, 51(7): 1111-1123.
[10]
Floch B, Alard M, Berrou C. Coded orthogonal frequency division multiplex[J]. Proceedings of the IEEE, 1995, 83(6): 982-996.
[11]
Das S, Carvalho E, Prasad R. Variable sub-carrier bandwidth in OFDM framework[J]. Electronics Letters, 2007, 43(1): 46-47.
[12]
Vahlin A, Holte N. Optimal finite duration pulse for OFDM[J]. IEEE Transactions on Communications, 1996, 44(1): 10-14.
2014, Vol. 54 
),王昭诚
