Frequency domain equalization for single-carrier broadband wireless systems
Frequency domain equalization for single-carrier broadband wireless systems
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DOI：
10.1109/35.995852
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发表时间：
2002-04-01
影响因子：
11.2
通讯作者：
Eidson, B
中科院分区：
文献类型：
--
作者：
Falconer, D;Ariyavisitakul, SL;Eidson, B
在住宅和商业环境中部署的宽带无线访问系统可能会面临敌对的无线电传播环境，而多路径延迟差异延伸超过数十个或数百个位间隔。正交频划分多路复用（OFDM）是公认的多载波解决方案，可应对此类多路径条件的影响。本文调查了应用于单载波（SC）调制解决方案的频域均衡（FIDE）。具有频域均衡的SC无线电调制解调器具有相似的性能，效率和低信号处理的复杂性优势与OFDM，此外，对RF损伤（例如功率放大器的非线性）的敏感性不如OFDM敏感。我们讨论SC和OFDM系统的相似性和差异以及共存的可能性，以及SC-FDE性能功能的示例。
Broadband wireless access systems deployed in residential and business environments are likely to face hostile radio propagation environments, with multipath delay spread extending over tens or hundreds of bit intervals. Orthogonal frequency-division multiplex (OFDM) is a recognized multicarrier solution to combat the effects of such multipath conditions. This article surveys frequency domain equalization (FIDE) applied to single-carrier (SC) modulation solutions. SC radio modems with frequency domain equalization have similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition are less sensitive than OFDM to RF impairments such as power amplifier nonlinearities. We discuss similarities and differences of SC and OFDM systems and coexistence possibilities, and present examples of SC-FDE performance capabilities.