Theoretical System Capacity of Multi-User MIMO THP in the Presence of Terminal Mobility

Theoretical performance evaluation of MU-MIMO THP with user scheduling

“…2 shows the evaluation model and its system parameters. In our performance evaluation, MSs are randomly distributed and the ordering process [7,12] is adopted to enhance the transmission performance of THP. In addition, the MIMO channel is assumed to follow spatially uncorrelated Rayleigh fading.…”

“…Therefore, in this paper, we investigate the system-level performance of THP in consideration of the modulo loss. In detail, the impact of the modulo loss is considered using the mod-Λ channel-based analysis [12], and it is clarified by comparing it with the traditional Shannon-Hartley-based approach.…”

“…where t c is the average time range of the system capacity and R 0 k;i ðtÞ is the instantaneous system capacity of the i-th MS at time t. Here, R 0 k;i ðtÞ is zero if the i-th MS is not scheduled at time t. Eqs. (11) and (12) proves that the PF metric requires the instantaneous system capacity, which is obtained from Eq. (6) or (10).…”

“…Moreover, although the authors in [10] considered the effect of modulo loss for performance evaluation, its effect is given as a constant margin degradation of 0.5 dB, which has left further room for improvement. Thus, in this paper, proportional fairness (PF) [8], which makes a reasonable compromise between fairness among users and the benefit of multi-user diversity, is considered as a user scheduling technique, and the theoretical system performance of MU-MIMO THP with PF is analyzed based on the mod-Λ channel [12]. Moreover, to clarify the required accuracy of the PF metric, the performance of the mod-Λ channel-based PF metric is compared with that of the traditional Shannon-Hartley theorem-based metric.…”