Link Adaptation with Multiple Feedback Thresholds

Publisher:
IEEE
Publication Type:
Conference Proceeding
Citation:
IEEE 23rd International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), 2012, pp. 496 - 501
Issue Date:
2012-01
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Opportunistic scheduling in multiuser system can improves the achievable sum-rate capacity when the number of users increases. The scheduling requires the knowledge of channel state information (CSI) which is generated and sent from the users. In this chapter, the achievable sum rate of multiuser systems with multiple feedback thresholds is formulated. It is demonstrated that the system with two thresholds can achieve 98% of the full-CSI sum rate which is equivalent to around 8.5% improvement compared with the system with one threshold without any requirement for additional feedback load.
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