Augmented Data Transmission for the ATSC Terrestrial DTV System

Augmented Data Transmission Based on Low Density Parity Check Code for the ATSC Terrestrial DTV System

“…In [11], the ADT system increasing the data capacity of the ATSC terrestrial DTV system was proposed. The proposed ADT system can provide an additional data of rate up to a few Mbps using the following three key technologies.…”

“…In [11], the ADT system adopted a simple 2-VSB modulation with 8 different levels of BRs, which are specified for the TxID signal injection in A/110B [1], for the ADT signal injection. Since the ADT system uses the hierarchical modulation, it does not require any additional RF spectrum to increase the data capacity within a 6 MHz RF channel.…”

“…In [11], the ADT system adopted a low rate SIRA code, which is well-known as turbo-like code [13]. The code rates of the SIRA encoder were about 0.0932 and 0.1864, and thus, the additional data rates of 1 and 2 Mbps were achieved, respectively.…”

“…To realistically reduce the robustness and greatly increase the system data capacity, the augmented data transmission (ADT) system was proposed in [11]. The ADT system, which is based on hierarchical modulation, DTV signal cancellation, and advanced error correction code, can provide an additional data rate of up to a few Mbps.…”

Study on Improved Polarized 2˟2 MIMO Spatial Multiplexing Method for DVB-NGH System

“…ADT 시 스템은 계층 변조 기법, DTV 신호 제거 기법, 향상된 에러 정정 코드 등을 적용하여 수 Mbps의 추가적인 데이터 전송 용량을 제공할 수 있다. 또한, 이 시스템은 데이터율을 증가 시키기 위해 추가적인 RF 스펙트럼이 요구되지 않고 기존 수신기와의 역호환성을 보장한다 [6] . 그러나, ATSC-ADT 시스템의 필드테스트 결과와 같이 역호환성을 보장할 경우 전송용량 증대 측면에서 한계를 가지는 단점이 있다 [7] .…”