TDCS large - scale partition multiple access communication method

In view of the serious multi-access interference in traditional transform domain communication systems, which can suppress the performance of users and bit error rate, a partition multiple access interference reduction method is proposed, which is suitable for large-scale transform domain multiple access communication. A multi-user method is proposed to divide users into users within the region and users outside the region for reducing interference, and the formula of bit error rate is deduced. The partition vector calculation method is proposed and CAN algorithm is introduced to improve the autocorrelation of the partition vector. The overall performance of the method is analyzed from the aspects of spectrum efficiency and bit error rate under gaussian channel, and the optimal length of the partition vector is given. Simulation results show that this method can greatly expand the number of users, ensure the bit error rate at low level, and the spectrum efficiency is stable.