符号化方法、復号方法、符号化器、及び、復号器

    公开(公告)号:JPWO2012098909A1

    公开(公告)日:2014-06-09

    申请号:JP2012553643

    申请日:2012-01-20

    IPC分类号: H03M13/19 H03M13/23

    摘要: 符号化方法は、情報系列を、符号化率が(n−1)/nである複数のパリティ検査多項式に基づくフィードフォワードLDPC畳み込み符号で符号化してパリティビット列を生成し、その後、インタリーブ処理を施し、アキュミュレート処理を施す。このアキュミュレート処理はインタリーブ後のパリティビット列のビットと、遅延させた前記アキュミュレート後のパリティビット列のビットとの排他的論理和を算出する処理である。そして、前記報系列と前記アキュミュレート後のパリティビット列とで構成される符号化系列を生成する。

    Radio transmitting device
    7.
    发明专利

    公开(公告)号:JP5106193B2

    公开(公告)日:2012-12-26

    申请号:JP2008070074

    申请日:2008-03-18

    IPC分类号: H04J11/00 H04J99/00

    CPC分类号: H04L27/2628 H04L27/2614

    摘要: Provided is a radio transmission device (100) which can flexibly cope with a request for assuring an error ratio feature during a high transmission rate, a request for increasing a cell coverage, or the like. The radio transmission device (100) includes a first subcarrier modulation unit (104) which forms a first subcarrier modulation signal obtained by converting a plurality of modulation signals into a frequency region; a second subcarrier modulation unit (105) which forms a second subcarrier modulation signal obtained by parallel conversion of a plurality of signals; an IFFT unit (111) which forms an OFDM signal by performing inverse Fourier transform on the first and the second subcarrier modulation signal; and a subcarrier mapping unit (110) which controls allocation of the first and the second subcarrier modulation signals.

    Multi-antenna transmission apparatus

    公开(公告)号:JP5089270B2

    公开(公告)日:2012-12-05

    申请号:JP2007173470

    申请日:2007-06-29

    摘要: Provided is a multi-antenna transmission device which can improve the reception quality when performing a repeated detection using a software value at the reception device side in a spatial multiplex MIMO system. A transmission device (1600) includes M (M is an integer not smaller than 2) transmission units (1601_1 to 1601_M) which interleave and map each of encoded data of M systems and transmit them. Each of the M transmission units (1601_1 to 1601_M) has: N (N is an integer not smaller than 2) interleavers (504A1 to 504AN (504X1 to 504XN)) which interleave the encoded data obtained from the same transmission data, by using different interleave patterns; and N antennas (510A1 to 510AN (510X1 to 510XN)) which transmit the signals obtained BY the respective interleavers.