Subcarrier and power allocation for an OFDMA uplink based on tap correlation information

被引:0
|
作者
Yoon, E [1 ]
Tujkovic, D [1 ]
Paulraj, A [1 ]
机构
[1] Stanford Univ, ISL, Stanford, CA 94305 USA
关键词
D O I
暂无
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
The impact of tap correlation on the achievable average sum rate of an OFDMA uplink is investigated. Tap correlation between channel taps was showed to reduce the average sum rate of an OFDMA uplink. However, if available subcarriers and power are allocated to multiusers based on their tap correlation information, a hefty portion of inherent multiuser diversity can be exploited in a cost effective manner leading to substantial improvement in spectral efficiency compared with uniform subcarrier and power allocation. The performance gain of such statistical adaptation is further investigated as a function of the number of simultaneously scheduled users per OFDM symbol.
引用
收藏
页码:2744 / 2748
页数:5
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