Study of anti-MAI self correlation peak detection based on terrestrial broadcasting systems

Many terrestrial broadcasting systems, such as TC-OFDM and TDS-OFDM, use pseudo-random sequences in time domain to synchronize. This makes it possible for receivers to estimate the time differences of arrival (TDOA) with matched filters. However, the strong signals sent by the nearby base stations cause receivers difficult to receive the weak signals sent by base stations far away, which is known as multiple access interference (MAI). This paper analyzes the performance of general self correlation peak detection, and introduces a new method of anti-MAI self correlation peak detection, which can improve 15dB of the receiver´s capability of anti MAI.