CAJ | 학술논문

交织多址接入（IDMA）技术是未来移动通信的关键技术之一,为了能更好地提高系统传输效率,提高抗多径衰落的能力,设计了一种基于低密度校验编码（LDPC）的正交频分复用-交织多址（OFDM-IDMA）系统。仿真结果发现,相较于传统的重复码,随着信噪比的提高,该系统的误码率迅速下降,非常适合高信噪比条件下的高速传输。
교직다지접입（IDMA）기술시미래이동통신적관건기술지일,위료능경호지제고계통전수효솔,제고항다경쇠락적능력,설계료일충기우저밀도교험편마（LDPC）적정교빈분복용-교직다지（OFDM-IDMA）계통。방진결과발현,상교우전통적중복마,수착신조비적제고,해계통적오마솔신속하강,비상괄합고신조비조건하적고속전수。
Interleave division multiple access(IDMA) is one of the key technologies to mobile communication.In order to improve the spectral efficiency of OFDM-IDMA system and the performance of anti-multipath fading,we designed OFDM-IDMA system based on LDPC.Simulation results showed that,compared to conventional repeated code,the system bit error rate decreased rapidly with improved signal to noise ratio.So the system with LDPC is very suitable for high SNR and high-speed transmission.