Single Carrier FDMA for Uplink Wireless Transmission
Single Carrier FDMA for Uplink Wireless Transmission
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DOI：
10.1109/mvt.2006.307304
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发表时间：
2006-09-01
影响因子：
8.1
通讯作者：
Goodman, David J.
中科院分区：
文献类型：
--
作者：
Myung, Hyung G.;Lim, Junsung;Goodman, David J.
单载波频分多址（SC - FDMA）是正交频分多址（OFDMA）的一种改进形式，是未来蜂窝系统中高数据速率上行链路通信的一种有前途的技术。SC - FDMA具有与OFDMA相似的吞吐量性能，且总体复杂度基本相同。SC - FDMA的一个主要优势是峰均功率比（PAPR），它比OFDMA的低。SC - FDMA目前是第三代合作伙伴计划（3GPP）正在考虑的蜂窝系统长期演进中的上行链路多址方案的有力候选者。在本文中，我们对SC - FDMA进行了概述。我们还分析了子载波映射对吞吐量和PAPR的影响。在可能的子载波映射方法中，我们发现具有信道相关调度（CDS）的局部化FDMA（LFDMA）比交织FDMA（IFDMA）能产生更高的吞吐量。然而，IFDMA的PAPR性能优于LFDMA。与其他通信系统一样，在SC - FDMA系统中，设计参数和性能之间存在复杂的权衡。
Single carrier frequency division multiple access (SC-FDMA), a modified form of Orthogonal FDMA (OFDMA), is a promising technique for high data rate uplink communications in future cellular systems. SC-FDMA has similar throughput performance and essentially the same overall complexity as OFDMA. A principal advantage of SC-FDMA is the peak-to-average power ratio (PAPR), which is lower than that of OFDMA. SC-FDMA is currently a strong candidate for the uplink multiple access scheme in the Long Term Evolution of cellular systems under consideration by the Third Generation Partnership Project (3GPP). In this paper, we give an overview of SC-FDMA. We also analyze the effects of subcarrier mapping on throughput and PAPR. Among the possible subcarrier mapping approaches, we find that localized FDMA (LFDMA) with channel-dependent scheduling (CDS) results in higher throughput than interleaved FDMA (IFDMA). However, the PAPR performance of IFDMA is better than that of LFDMA. As in other communications systems there are complex tradeoffs between design parameters and performance in an SC-FDMA system.