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2010•Journal of Broadcast EngineeringOpen access

Performance Analysis of DVB-T2 Turbo Equalization with LDPC and MAP Detector

Qing Song Tai, Dong Seog Han

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Abstract

본 논문에서는 DVB-T2 (digital video broadcasting for terrestrial - 2nd generation) 시스템을 위한 터보 등화기를 제안 하고 그 성능을 분석하였다. 터보 등화기는 MAP (maximum a posteriori) 검파기와 LDPC (low density parity check) 복호기로 구성 되었다. LS(least square) 채널 추정 기반 SISO (soft-input-soft-output) MAP 등화기는 LDPC 복호기에 외래 확률 값을 준다. 터보 등화기의 성능을 반복 횟수에 따라 컴퓨터 실험을 통하여 분석하였다. In this paper, a turbo equalizer is proposed for the digital video broadcasting for terrestrial - 2nd generation (DVB-T2) system. The proposed turbo equalizer is consisted with the maximum a posteriori (MAP) and low density parity check (LDPC) decoder. The channel information for the soft-input-soft-output (SISO) MAP equalizer is based on the least square (LS) channel estimator. The performance is analyzed through computer simulations in terms of the iteration number.

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본 논문에서는 DVB-T2 (digital video broadcasting for terrestrial - 2nd generation) 시스템을 위한 터보 등화기를 제안 하고 그 성능을 분석하였다. 터보 등화기는 MAP (maximum a posteriori) 검파기와 LDPC (low density parity check) 복호기로 구성 되었다. LS(least square) 채널 추정 기반 SISO (soft-input-soft-output) MAP 등화기는 LDPC 복호기에 외래 확률 값을 준다. 터보 등화기의 성능을 반복 횟수에 따라 컴퓨터 실험을 통하여 분석하였다. In this paper, a turbo equalizer is proposed for the digital video broadcasting for terrestrial - 2nd generation (DVB-T2) system. The proposed turbo equalizer is consisted with the maximum a posteriori (MAP) and low density parity check (LDPC) decoder. The channel information for the soft-input-soft-output (SISO) MAP equalizer is based on the least square (LS) channel estimator. The performance is analyzed through computer simulations in terms of the iteration number.

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Available abstract

본 논문에서는 DVB-T2 (digital video broadcasting for terrestrial - 2nd generation) 시스템을 위한 터보 등화기를 제안 하고 그 성능을 분석하였다. 터보 등화기는 MAP (maximum a posteriori) 검파기와 LDPC (low density parity check) 복호기로 구성 되었다. LS(least square) 채널 추정 기반 SISO (soft-input-soft-output) MAP 등화기는 LDPC 복호기에 외래 확률 값을 준다. 터보 등화기의 성능을 반복 횟수에 따라 컴퓨터 실험을 통하여 분석하였다. In this paper, a turbo equalizer is proposed for the digital video broadcasting for terrestrial - 2nd generation (DVB-T2) system. The proposed turbo equalizer is consisted with the maximum a posteriori (MAP) and low density parity check (LDPC) decoder. The channel information for the soft-input-soft-output (SISO) MAP equalizer is based on the least square (LS) channel estimator. The performance is analyzed through computer simulations in terms of the iteration number.

Key concepts: Turbo equalizer, Low-density parity-check code, Maximum a posteriori estimation, Turbo, Digital Video Broadcasting, Equalization (audio), Turbo code, Computer science

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