Single-Carrier Frequency Division Multiple Access (SC-FDMA) has been selected as the uplink transmission scheme in the 3GPP Long Term Evolution standard. SC-FDMA has reduced sensitivity to phase noise and a lower Peak-to-Average Power Ratio (PAPR) compared to Orthogonal Frequency Division Multiple Access. In this paper we propose joint Tomlinson-Harashima Precoding and transmit power allocation for SC-FDMA. We derive the optimum power allocation for SC-FDMA transmission for both Zero-Forcing (ZF) and Minimum Mean-Square Error (MMSE) LE receivers in order to maximize the achievable data rate subject to constant transmit power. Although this improves the system's performance and offers a 1-2 dB improvement over Frequency-Domain Decision Feedback Equalization (FD-DFE), when the proposed transmit power allocation scheme is combined with decision feedback equalization the system incurs a performance degradation due to error propagation. In this paper we propose a joint implementation of the derived power allocation scheme with THP. Here we show that the system's performance is further improved over both FD-LE and FD-DFE when transmit power allocation is applied.
|Translated title of the contribution||Joint Tomlinson-Harashima precoding and optimum transmit power allocation for SC-FDMA|
|Title of host publication||IEEE Wireless Communications and Networking Conference (WCNC) 2010, Sydney, Australia|
|Publisher||Institute of Electrical and Electronics Engineers (IEEE)|
|Pages||1 - 6|
|Number of pages||6|
|Publication status||Published - Apr 2010|
|Event||Wireless Communications and Networking Conference - Sydney, Australia|
Duration: 1 Apr 2010 → …
|Conference||Wireless Communications and Networking Conference|
|Period||1/04/10 → …|
Bibliographical noteRose publication type: Conference contribution
Sponsorship: The authors would like to thank the Centre for Communications Research for the provision of research facilities and access to a high performance computing cluster.
Wireless Communications and Networking Conference (WCNC) 2010.
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- 3GPP LTE