Time Slot Assignment Algorithms for SDMA/TDMA System Based on Estimated SINR

Yoshitaka HARA

IEICE TRANSACTIONS on Communications   Vol.E84-B    No.2    pp.220-227
Publication Date: 2001/02/01
Online ISSN: 
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Wireless Communication Technology
mobile communication,  SDMA,  slot assignment,  adaptive array,  capacity,  

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This paper presents efficient time slot assignment algorithms applicable to the uplink of SDMA system. A frame consists of one control time slot and multiple communication time slots where terminals in different angular positions share the same time slot. In the proposed algorithms, a time slot is assigned to a new terminal considering not only the signal quality of the new terminal but also the signal quality of active terminals. Simple calculation method for estimated signal-to-interference plus noise ratio (SINR) is employed to decrease the computational complexity. The performance of the proposed algorithms is evaluated by computer simulation and compared with sectorized systems to show the validity of the proposed algorithms.