On Hybrid Multiple Access and Its Reuse Partitioning

The cyclic prefix comb spectrum code division multiple access (CP-CS-CDMA) has comb spectrum in frequency domain. Its different code groups can be separated with a simple hopping accumulator. In the paper, we combine OFDMA and CP-CS-CDMA, and propose a new multiple access scheme, hybrid multiple access (HMA). Then we propose a new reuse partitioning system with HMA. The cell of the system has two regions: the inner region with OFDMA and the outer region with CP-CSCDMA. The proposed system makes full use of the advantages of OFDMA and CDMA to improve the performance. Theoretical analysis and simulation results have verified that our HMA and the new reuse partitioning system significantly increase the capacity compared with the conventional OFDMA system.