发明名称 Adaptive equalizer
摘要 An adaptive equalizer (100) has a signal converter (200) for performing a fast Fourier transform and/or an inverse fast Fourier transform. The signal converter (200) has: a first wide-bit memory (201) capable of reading/writing a plurality of sample signals; a first register group (202) comprising a plurality of registers capable of accessing the first wide-bit memory (201); a butterfly computation unit group (204) comprising a plurality of butterfly computation units; and a first connection switching unit (203) for switching the state of connection between the plurality of registers and the plurality of butterfly computation units.
申请公布号 US9191253(B2) 申请公布日期 2015.11.17
申请号 US201214239923 申请日期 2012.06.29
申请人 PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD. 发明人 Yomo Hidekuni;Matsuoka Akihiko;Maruyama Atsushi
分类号 H03H7/30;H04L27/01;G06F17/14;H04L25/03 主分类号 H03H7/30
代理机构 Pearne & Gordon LLP 代理人 Pearne & Gordon LLP
主权项 1. An adaptive equalizer that performs adaptive equalization on a time-domain signal in a frequency domain, comprising a signal conversion section that performs at least one of a fast Fourier transform and an inverse fast Fourier transform, wherein the signal conversion section includes: a memory capable of reading and writing signals for 2M samples, where M is a natural number; 2M registers accessible to the memory; M butterfly operation sections; and a switching control section that switches a connection state between the 2M registers and the M butterfly operation sections, wherein: the signal conversion section includes two pairs of the memory and the 2M registers; and the switching control section switches a connection state (i) between the 2M registers in one of the two pairs and the M butterfly operation sections and (ii) between the 2M registers in the other of the two pairs and the M butterfly operation sections, such that a role of the memory is switched between a memory for output and a memory for input for each stage of the fast Fourier transform and the inverse fast Fourier transform.
地址 Osaka JP