Joint MIMO MCS Selection in WiMAX : System Design and Testbed Experiments
Date Issued
2012
Date
2012
Author(s)
Hsieh, Po-Han
Abstract
As one of the broadband wireless communication solutions, Mobile WiMAX has been developed and already in markets in recent years. However, due to the price of WiMAX equipments, little research is based on the measurement approach. In this paper, we focus on the MCS and MIMO selection of Mobile WiMAX by measurement-based approach. Unlike previous works study the MIMO selection with rate adaptation based on theoretical and simulated approach. We provided the on-air measurement result of each MCS with specific MIMO mode in indoor environments. Then, we set up two joint MIMO MCS selection mechanisms according to different strategies based on the on-air measurement results, and we combined these two joint MIMO MCS selection with different quality of service (QoS) types into the mechanism which we called as ``hybrid joint MIMO MCS selection". We compared the hybrid joint MIMO MCS selection with the original rate adaptation in our WiMAX base station by UDP, video streaming and multi-traffic experiments. The results show that the performance improves with the help of joint MIMO selection accompanying with different selection strategy. We also concluded and discuss some issue about this joint MIMO MCS selection mechanism.
Subjects
Rate adaptation
MIMO switching
Measurement
Type
thesis
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