Next Generation RF Transmission for ATSC Terrestrial DTV

In this paper, we describe a new 1/4 rate robust modulation techniques for enhanced-xVSB system which is fully backward compatible with ATSC 8-VSB standard. 1/4 rate mode enhanced-xVSB system provides broadcasters with a wide choice of trade-offs of data rate vs amount of robustness of enhanced data for pedestrian/mobile services. Lab test results of proposed enhanced-xVSB 1/4 rate mode robust stream is a significantly improved multipath as well as AWGN reception performance for enhanced-xVSB receiver. We suggest an enhanced-xVSB terrestrial broadcasting system for ATSC HDTV and pedestrian/portable TV simultaneous broadcasting service provisioning.