| Title |
Time Offset Non Orthogonal Multiple Access for Increasing Information Transmission Capacity in Radio Multiple Access Area of Next Generation Mobile Communications |
| Authors |
하정훈(Jeonghun Ha) ; 임명섭(Myoungseob Lim) |
| DOI |
https://doi.org/10.5573/ieie.2021.58.11.10 |
| Keywords |
Non-orthogonal multiple access; information capacity; interference cancellation; time offset Non-orthogonal multiple access |
| Abstract |
It is expected that information transmission capacity will be highly increased in radio multiple access area(cell) of 5G and next 6G mobile radio communication systems. In order to increase information transmission capacity in mobile radio multiple access area under the condition of the limited frequency resources, NOMA with interference cancellation has been researched. The firstly processed signal for successive interference cancellation is detected under other signals’ interference in NOMA. However, it is possible to detect firstly processed signal without interference in the time offset interval in Time Offset NOMA(TONOMA) proposed in this paper, in which signals in TONOMA are superposed with divided bit time offset differently from NOMA. It is shown that information transmission capacity with 12.5 in TONOMA is higher than NOMA with 9.9 when two signals with different channel condition are superposed. The condition that TONOMA can be effectively applied is analyzed and it is shown through computer simulation that information transmission capacity is increased in the hybrid system of TONOMA and NOMA using beam forming. |