Invention Grant
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
- Patent Title: RAM-based fast fourier transform unit for wireless communications
- Patent Title (中): 基于RAM的快速傅里叶变换单元,用于无线通信
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Application No.: US10234060Application Date: 2002-08-30
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Publication No.: US07555512B2Publication Date: 2009-06-30
- Inventor: Ying Chen , Barrett J Brickner
- Applicant: Ying Chen , Barrett J Brickner
- Applicant Address: US CA Santa Clara
- Assignee: DSP Group Inc.
- Current Assignee: DSP Group Inc.
- Current Assignee Address: US CA Santa Clara
- Agency: Shumaker & Sieffert, P.A.
- Main IPC: G06F17/14
- IPC: G06F17/14

Abstract:
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.
Public/Granted literature
- US20030050945A1 RAM-based fast fourier transform unit for wireless communications Public/Granted day:2003-03-13
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