发明授权
US07555512B2 RAM-based fast fourier transform unit for wireless communications
有权
基于RAM的快速傅里叶变换单元,用于无线通信
- 专利标题: RAM-based fast fourier transform unit for wireless communications
- 专利标题(中): 基于RAM的快速傅里叶变换单元,用于无线通信
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申请号: US10234060申请日: 2002-08-30
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公开(公告)号: US07555512B2公开(公告)日: 2009-06-30
- 发明人: Ying Chen , Barrett J Brickner
- 申请人: Ying Chen , Barrett J Brickner
- 申请人地址: US CA Santa Clara
- 专利权人: DSP Group Inc.
- 当前专利权人: DSP Group Inc.
- 当前专利权人地址: US CA Santa Clara
- 代理机构: Shumaker & Sieffert, P.A.
- 主分类号: G06F17/14
- IPC分类号: G06F17/14
摘要:
A wireless communication technique enables fast Fourier transforms (FFTs) and inverse fast Fourier transforms (IFFTs) to be performed with reduced latency and reduced memory requirements. In particular, an FFT/IFFT unit receives input data representative of a communication symbol. The FFT/IFFT unit applies an FFT operation to the input data to generate intermediate data. The FFT/IFFT unit stores the intermediate data in a random access memory (RAM). The intermediate data stored in the RAM may override data used as input to the FFT operation. The FFT/IFFT unit selectively addresses the RAM to retrieve the intermediate data in a desired output order. For example, the FFT/IFFT unit may output the intermediate data in the same sequential order as the FFT/IFFT unit received the input data.
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