Abstract
This paper proposes the Virtual Time-slot Allocation (VTSA) scheme for throughput enhancement to realize a Gbps-order time division multiple access (TDMA) wireless personal area network (WPAN) system in a realistic millimeter-wave residential multipath environment. Conventional TDMA system allocates each time-slot to only one communication link, which is insufficient to achieve Gbps-order throughput, particularly in severe channel conditions of multipath environment. In this paper, the proposed VTSA scheme enables a single time-slot to be reused for multiple communication links simultaneously (hence the name virtual), thus significantly increases system throughput. However, this generates co-channel interference (CCI) among the communication links occupying the same time-slot. The proposed cross layer VTSA scheme is therefore designed to be able to schedule the sharing of time-slots among multiple communication links, and at the same time monitor to minimize performance degradation due to CCI. Two time-slot reuse methods are proposed and compared in this paper, namely the minimum-CCI slotting method and the random slotting method. As a result, it is found that the VTSA scheme is capable of increasing the system throughput as much as approximately 30% in the additive white Gaussian noise (AWGN), line-of-sight (LOS) and the non-line-of-sight (NLOS) multipath channel. It is also found that the minimum-CCI slotting method has 10% better performance as compared to the random slotting method.
Original language | English |
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Title of host publication | Proceedings - 2009 IEEE International Conference on Communications, ICC 2009 |
DOIs | |
Publication status | Published - 2009 Nov 19 |
Event | 2009 IEEE International Conference on Communications, ICC 2009 - Dresden, Germany Duration: 2009 Jun 14 → 2009 Jun 18 |
Other
Other | 2009 IEEE International Conference on Communications, ICC 2009 |
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Country | Germany |
City | Dresden |
Period | 09/6/14 → 09/6/18 |
Keywords
- Co-channel interference
- Cross layer
- Gbps
- Millimeter-wave
- Virtual time-slot allocation
- WPAN
ASJC Scopus subject areas
- Computer Networks and Communications
- Electrical and Electronic Engineering