Key technologies for next-generation terrestrial digital television standard DVB-T2

Vangelista, Lorenzo; Benvenuto, N.; Tomasin, Stefano; Nokes, C.; Stott, J. H.; Filippi, Alessio; Vlot, Marnix; Mignone, V.; Morello, A.

doi:10.1109/mcom.2009.5273822

Cited by 88 publications

(57 citation statements)

References 5 publications

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“…We exploit this assumption by approximating the time-varying frequency response in each interval by the midpoint value of the function. The received signal (5) can now be simplified as (6) where , and are the midpoint values of the frequency response, the channel impulse response and path delays, respectively, on the interval . The func- 2 We use the continuous time Fourier transform for simplicity.…”

Section: Partial Fft Demodulationmentioning

confidence: 99%

“…The subcarrier frequency response coefficients given by (6) are then equal in all the intervals. The elements of the auto-correlation matrix of the outputs of the subcarrier are then (15) Defining as addition modulo , we see that is a circulant matrix as .…”

Section: ) Example-time Invariant Channelmentioning

confidence: 99%

“…O RTHOGONAL Frequency Division Multiplexing (OFDM) is now the primary signaling scheme for several wireless communication systems such as Long Term Evolution (LTE), WiMAX, Digital Video Broadcasting (DVB) etc [4]- [6] and is also under consideration for underwater acoustic (UWA) communications [1], [7]- [9]. Interest in OFDM stems from the fact that it decomposes a static frequency selective channel into a number of flat channels, enabling low complexity, single-tap equalization and symbol-by-symbol detection at the receiver.…”

Section: Introductionmentioning

confidence: 99%

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Partial FFT Demodulation: A Detection Method for Highly Doppler Distorted OFDM Systems

Yerramalli

Stojanovic

Mitra

2012

IEEE Trans. Signal Process.

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Abstract-Employing Orthogonal Frequency Division Multiplexing (OFDM) signaling over time-varying channels results in inter-carrier interference (ICI) and degraded detection error probability due to the loss of orthogonality among the subcarriers. This problem is particularly exacerbated for systems operating in highly mobile scenarios such as underwater acoustic (UWA) communications, digital video broadcasting (DVB) for mobile devices and vehicle-to-vehicle (V2V) networks. To address the problem of data detection in such scenarios, we propose a novel demodulation strategy using several partial interval Fast Fourier Transforms (FFTs) instead of a conventional, single full interval FFT. Algorithms for computing the weights used to combine the outputs of the partial FFT are presented for three scenarios: full, partial and no knowledge of the time varying channel. Numerical simulations and an approximate theoretical analysis show that significant performance gains can be obtained over traditional equalizers at a very moderate complexity.

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Section: Partial Fft Demodulationmentioning

confidence: 99%

Section: ) Example-time Invariant Channelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Partial FFT Demodulation: A Detection Method for Highly Doppler Distorted OFDM Systems

Yerramalli

Stojanovic

Mitra

2012

IEEE Trans. Signal Process.

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“…UHDTV 서비스는 최대 8K(7,680x4,320화소)를 지원하기 때문에 높은 전송율이 필요하다 [1] . 그러므로 지상파 디지털 방송 표준인 ATSC(Advanced Television Systems Committee)와 DVB(Digital Video Broadcasting)에서는 주 어진 대역폭 내에서 스펙트럼 효율을 높이기 위하여 MIMO (multiple-input multiple-output) 전송 기법을 주요 기술로 고려하고 있다 [2] . MIMO 전송 기법은 IEEE에서 지정한 근거리 이동통신 표준과 3GPP에서 지정한 LTE 및 LTE-advanced 표준에 채 택이 되어 상용화되고 있다 [3] [4] .…”

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“…MIMO 전송 기법은 IEEE에서 지정한 근거리 이동통신 표준과 3GPP에서 지정한 LTE 및 LTE-advanced 표준에 채 택이 되어 상용화되고 있다 [3] [4] . 이동통신시스템은 양방향 성을 제공하고 있기 때문에 송신기에서 역방향 채널 정보 를 얻을 수가 있지만, 지상파 방송 시스템은 단방향 서비스 이므로 수신기로부터 채널 정보를 받을 수 없다 [2] . 그리고 지상파 방송의 특성 상 LoS(line of sight)로 인한 공간적 채널 상관도(spatial correlation)가 높아지기 때문에 다중화 이득이 감소하는 단점이 있다 [5] [6] .…”

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Analysis of Spatial Modulation MIMO Reception Performance for UHDTV Broadcasting

Park¹,

Han²

2015

Journal of Broadcast Engineering

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In this paper, the reception performance of spatial modulation multiple-output multiple-input (MIMO) is analyzed for high speed terrestrial broadcasting. The MIMO scheme is required to reduce the inter symbol interference (ISI) and spatial correlation. The spatial modulation scheme solves the problem of ISI, but the spatial correlation degrades the reception performance of SM scheme. The space-time block coded spatial modulation (STBC-SM) is combined the SM system with space-time block code (STBC) for reducing the effects of the spatial correlation. However, the STBC-SM scheme degrades the spectral efficiency by transmitting same data in the two symbol period. The double space-time transmit diversity with spatial modulation (DSTTD-SM) scheme transmits the data with full antenna combination. To adapt these SM MIMO systems into the terrestrial broadcasting system, the reception performance is analyzed using computer simulation in SUI channel environments.

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Broadband planar dipole array Antenna with double C-shaped slit elements for digital TV broadcasting transmission

Osklang

Phongcharoenpanich

2016

Int J RF and Microwave Comp Aid Eng

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This research has proposed a planar rectangular dipole antenna enclosed in double C-shaped parasitically slit elements (i.e., radiator element) on a double-cornered reflector for bandwidth enhancement. In the study, simulations were first carried out to determine the optimal parameters of the radiator element and then a radiator element prototype was fabricated and mounted onto a double-cornered aluminum reflector. The simulated and measured |S 11 |<-10 dB of the antenna element covered the frequency ranges of 451-901 MHz (66.6%) and 455-886 MHz (64.3%), respectively. The gain was enhanced by the subsequent deployment of multiple radiator elements to fabricate a four-element vertically array antenna on an elongated double-cornered reflector. The simulated and measured |S 11 |<210 dB of the array antenna, respectively, covered the 410-991 MHz (82.9%) and 415-886 MHz (72.4%) frequency ranges. The proposed array antenna radiates unidirectionally across the DTV frequency band with a measured front-to-back ratio and cross polarization >20 and <223 dB, respectively. The simulated and measured half-power beam widths in the E and H planes were respectively 568 6 138 and 208 6 68; and 578 6 138 and 218 6 68. In addition, the simulated and measured gains of the array antenna were 12.8-16.4 dBi and 11.3-15.8 dBi along the 470-862 MHz frequency range. This proposed array antenna is thus suitable for DTV broadcasting transmission. V C 2016 Wiley Periodicals, Inc. Int J RF and Microwave CAE 26:466-478, 2016.

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Key technologies for next-generation terrestrial digital television standard DVB-T2

Cited by 88 publications

References 5 publications

Partial FFT Demodulation: A Detection Method for Highly Doppler Distorted OFDM Systems

Partial FFT Demodulation: A Detection Method for Highly Doppler Distorted OFDM Systems

Analysis of Spatial Modulation MIMO Reception Performance for UHDTV Broadcasting

Broadband planar dipole array Antenna with double C-shaped slit elements for digital TV broadcasting transmission

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