| OFDM调制解调器的算法实现 |
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| 引用本文： | 彭仁明,贺春林. OFDM调制解调器的算法实现[J]. 河南师范大学学报(自然科学版), 2009, 37(2) |
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| 作者姓名： | 彭仁明 贺春林 |
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| 作者单位： | 绵阳师范学院,物理与电子工程学院,四川,绵阳,621000;西华师范大学,计算机学院,四川,南充,637002 |
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| 摘 要： | 介绍了利用流水线FFT设计的方法来实现OFDM调制解调.FFT处理器包括双口RAM、地址产生单元、蝶形单元及CSD陈列.该设计利用旋转因子对称性、简化的复数乘法和旋转因子CSD编码简化蝶形单元设计,并按照读-修改地址-写的顺序,利用双口RAM从一级向下一级来传送数据.
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| 关 键 词： | OFDM 双口RAM 蝶形单元 CSD |
Algorithm Implementation of OFDM Modulator |
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| PENG Ren-ming,HE Chun-lin. Algorithm Implementation of OFDM Modulator[J]. Journal of Henan Normal University(Natural Science), 2009, 37(2) |
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| Authors: | PENG Ren-ming HE Chun-lin |
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| Affiliation: | 1.School of physics & Electronical Engineering;Mianyang Normal University;Mianyang 621000;China;2.The College of Computer;China West Normal University;Nanchong 637002;China |
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| Abstract: | The research simply introduces a novel method pipelined FFT for the implementation of OFDM modulator/demodulator.It is made up of dual-port RAM,the address circuit unit,butterfly unit and CSD array.The symmetry characteristic of twiddle factors,simplified multiplication of complex number and CSD coding of twiddle factors are used to simplify the hardware implementation of butterfly.Data are transmitted from one stage to the next through the dram according to the order: read-modify address-write. |
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| Keywords: | OFDM CSD |
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