JP2015502597A - Firフィルタリングのためのベクトル畳み込み関数を含む命令セットを有するベクトル・プロセッサ - Google Patents
Firフィルタリングのためのベクトル畳み込み関数を含む命令セットを有するベクトル・プロセッサ Download PDFInfo
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Abstract
Description
本出願は、2011年10月27日に出願され、「Software Digital Front End (SoftDFE) Signal Processing and Digital Radio」と題する米国仮特許出願第61/552,242号の優先権を主張するものである。なお、この米国仮特許出願は、参照により本明細書に組み入れられる。本出願は、2010年8月3日に出願され、「System and Method for Providing Memory Bandwidth Efficient Correlation Acceleration」と題する米国特許出願第12/849,142号の関連出願である。この米国特許出願は、参照により本明細書に組み入れられる。
(y1,y2,...,y37)=vec_cor32x37(x1,x2,...,x68)
以上で、本発明の例示的な実施形態についてデジタル・プロセッサの内部にあるデジタル論理ブロックとメモリ・テーブルとの関係で説明してきたが、当業者には明らかであるように、様々な機能を、デジタル領域において、ソフトウェア・プログラムにおける処理ステップとして、回路素子もしくはステート・マシンによるハードウェアにおいて、またはソフトウェアとハードウェアとの両方の組み合わせにおいて、実装することができる。そのようなソフトウェアは、例えば、デジタル信号プロセッサ、特定用途向け集積回路、またはマイクロコントローラにおいて、用いることができる。そのようなハードウェアおよびソフトウェアは、集積回路の内部において実装された回路の中で実現することができる。
Claims (10)
- 入力信号とフィルタのインパルス応答との間の畳み込みを実行するためにベクトル・プロセッサによって実行される方法であって、
少なくともN1+N2−1個の入力サンプルで構成されるベクトルを取得することと、
それぞれの時間シフトされたバージョンがN1個のサンプルを含む、前記ベクトルのN2個の時間シフトされたバージョンを取得することと、
前記ベクトルの前記時間シフトされたバージョンの重み付けされた和を、N1個の係数のベクトルにより実行することと、
前記重み付けされた和のそれぞれに対して1つの出力値を含む出力ベクトルを生成することと、
を含む方法。 - 前記N1+N2−1個の入力サンプルで構成されたベクトルを有する1つまたは複数のベクトル畳み込みソフトウェア命令に応答して、ベクトル・プロセッサによって実行される、請求項1に記載の方法。
- 前記ベクトルは複数の実数または複素数の入力サンプルを含み、前記フィルタのインパルス応答は実数または複素数である複数の係数を用いて表される、請求項1に記載の方法。
- 前記フィルタのインパルス応答は複数の係数を用いて表され、前記係数は前記係数のすべてのビットが処理されるまで複数回の反復を用いて減少されたビット数で処理され、それぞれの反復の出力は前記係数のすべてのビットが処理されるまでシフトされ累積される、請求項1に記載の方法。
- 前記フィルタのインパルス応答は複数の係数を用いて表され、前記畳み込みによってサポートされる係数の個数はフィルタにおける係数の個数よりも少なく、この方法は、より大きなフィルタのより小さな塊を反復的に処理するステップを更に含み、それぞれの反復の出力は前記より大きなフィルタのすべてが処理されるまでそれぞれの塊に対して累積される、請求項1に記載の方法。
- 入力信号とフィルタのインパルス応答との間の畳み込みを実行するベクトル・プロセッサであって、
メモリと、
前記メモリに結合されている少なくとも1つのハードウェア・デバイスであって、
少なくともN1+N2−1個の入力サンプルで構成されるベクトルを取得し、
それぞれの時間シフトされたバージョンがN1個のサンプルを含む、前記ベクトルのN2個の時間シフトされたバージョンを取得し、
前記ベクトルの前記時間シフトされたバージョンの重み付けされた和を、N1個の係数のベクトルにより実行し、
前記重み付けされた和のそれぞれに対して1つの出力値を含む出力ベクトルを生成する、ように動作するハードウェア・デバイスと、
を備えているベクトル・プロセッサ。 - 前記N1+N2−1個の入力サンプルで構成されたベクトルを有する1つまたは複数のベクトル畳み込みソフトウェア命令に応答して、前記畳み込みを実行する、請求項6に記載のベクトル・プロセッサ。
- 前記ベクトルは複数の実数または複素数の入力サンプルを含み、前記フィルタのインパルス応答は実数または複素数である複数の係数を用いて表される、請求項6に記載のベクトル・プロセッサ。
- 前記フィルタのインパルス応答は複数の係数を用いて表され、前記係数は前記係数のすべてのビットが処理されるまで複数回の反復を用いて減少されたビット数で処理され、それぞれの反復の出力は前記係数のすべてのビットが処理されるまでシフトされ累積される、請求項6に記載のベクトル・プロセッサ。
- 前記フィルタのインパルス応答は複数の係数を用いて表され、前記畳み込みによってサポートされる係数の個数はフィルタにおける係数の個数よりも少なく、より大きなフィルタのより小さな塊が反復的に処理され、それぞれの反復の出力は前記より大きなフィルタのすべてが処理されるまでそれぞれの塊に対して累積される、請求項6に記載のベクトル・プロセッサ。
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US201161552242P | 2011-10-27 | 2011-10-27 | |
US61/552,242 | 2011-10-27 | ||
PCT/US2012/062182 WO2013063440A1 (en) | 2011-10-27 | 2012-10-26 | Vector processor having instruction set with vector convolution funciton for fir filtering |
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JP2014539058A Active JP6526415B2 (ja) | 2011-10-27 | 2012-10-26 | ベクトル・プロセッサおよび方法 |
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JP2014539055A Expired - Fee Related JP6010823B2 (ja) | 2011-10-27 | 2012-10-26 | デジタルrf入力信号を直接デジタル合成するための方法、デジタルrf入力信号合成器およびシステム |
JP2014539057A Expired - Fee Related JP6037318B2 (ja) | 2011-10-27 | 2012-10-26 | ソフトウェアで信号に対して1つまたは複数のデジタル・フロントエンド(dfe)機能を実行するための方法およびプロセッサ |
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JP2014539057A Expired - Fee Related JP6037318B2 (ja) | 2011-10-27 | 2012-10-26 | ソフトウェアで信号に対して1つまたは複数のデジタル・フロントエンド(dfe)機能を実行するための方法およびプロセッサ |
JP2017140725A Active JP6662815B2 (ja) | 2011-10-27 | 2017-07-20 | ブロックベースの波高率低減(cfr) |
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