Title :
Performance of the DPPM/CDM system using a cascaded cancellation scheme
Author :
Habuchi, Hiromasa ; Masubuchi, Mariko
Author_Institution :
Dept. of Comput. & Inf. Sci., Ibaraki Univ., Hitachi, Japan
Abstract :
In this paper, the code division multiplex of the digital pulse position modulation system (DPPM/CDM system) using the cascaded cancellation scheme is proposed. Moreover, the bit error rate (BER) performance and the effect of the cascaded cancellation techniques are evaluated. As a result, it is found that the BER performance is closer to the lower bound when the number of stages in the cascaded cancellation system increases. Therefore, the cascaded cancellation technique is effective to suppress co-channel interference. It is noticed that the degradation from the lower bound is less than 0.1 [dB] when the number of stages in the cascaded cancellation system is 2. Therefore, the number of cancellers is 2 for simplicity
Keywords :
cochannel interference; error statistics; interference suppression; multiplexing; pulse position modulation; spread spectrum communication; BER performance; DPPM/CDM system; bit error rate; cascaded cancellation scheme; co-channel interference; code division multiplex; degradation; digital pulse position modulation system; lower bound; Bit error rate; Decorrelation; Degradation; Interchannel interference; Interference suppression; Modulation coding; Multiaccess communication; Optical modulation; Optical pulses; Pulse modulation;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647063
