Abstract
The power allocation problem is addressed for time division duplex (TDD) LTE-A uplink systems in this paper. Due to the IDFT de-spreading in LTE-A uplink, the channel frequency responses in an IDFT de-spreading block will be tangled together. After analyzing the equivalent signal to interference plus noise ratio (SINR) in the time domain, a Truncated Squared norm of channel equalization Coefficients based Power Allocation (TSCPA) method is proposed to improve the final SINR performance after the IDFT de-spreading block. The proposed TSC-PA algorithm is verified for the clustered DFT-s-OFDM system in eigen-model block diagonalization multi-user MIMO uplink environment by simulations. The results demonstrate that the proposed TSC-PA algorithm can further improve the system block error rate (BLER) performance by selecting a proper truncation threshold.
Original language | English |
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Title of host publication | 2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1-5 |
Number of pages | 5 |
ISBN (Print) | 9781424463985 |
DOIs | |
Publication status | Published - 2010 |
Externally published | Yes |
Event | IEEE Wireless Communications and Networking Conference 2010, WCNC 2010 - Sydney, NSW, Australia Duration: 18 Apr 2010 → 21 Apr 2010 |
Other
Other | IEEE Wireless Communications and Networking Conference 2010, WCNC 2010 |
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Country/Territory | Australia |
City | Sydney, NSW |
Period | 18/04/10 → 21/04/10 |