Analysis and evaluation of MAI in short-PRN communication system

How to transmit several links of high information capacity in limited bandwidth is a key factor of high-speed communication system for the high-speed data separates the PRN code into short ones, which lead the multiple-access interference (MAI) serious prejudice the stability and effectiveness of system. Accurate evaluation methods should be used in system designing while traditional evaluation method has a large error on BER for the particularity of MAI in short-PRN system. The paper put forward a analysis and evaluation method based on signal parameters included code length, code phase, carrier phase, cross-correlation distribution estimated parameter and so on. A test short-PRN communication system was established and the results prove the effectiveness of the method.