Method and apparatus for generating run-length limited code
    1.
    发明授权
    Method and apparatus for generating run-length limited code 失效
    用于生成游程限制代码的方法和装置

    公开(公告)号:US5812073A

    公开(公告)日:1998-09-22

    申请号:US510140

    申请日:1995-07-31

    CPC分类号: H03M5/145

    摘要: A method and an apparatus are provided for generating an (4,20) RLL modulation code having a decreased detectible window width and an increased recording density ratio. The code's spectrum is concentrated in the low-frequency band, thereby improving the signal-to-noise ratio. In addition, the hardware of an encoder and a decoder can be easily implemented since the modulation code has a fixed codeword length.

    摘要翻译: 提供了一种用于产生具有降低的可检测窗口宽度和增加的记录密度比的(4,20)RLL调制码的方法和装置。 代码的频谱集中在低频带,从而提高信噪比。 此外,编码器和解码器的硬件可以容易地实现,因为调制码具有固定的码字长度。

    OFDM symbol transmission method and apparatus for providing sector diversity in a mobile communication system, and system using the same
    3.
    发明申请
    OFDM symbol transmission method and apparatus for providing sector diversity in a mobile communication system, and system using the same 审中-公开
    用于在移动通信系统中提供扇区分集的OFDM符号传输方法和装置,以及使用该OFDM符号的方法和装置

    公开(公告)号:US20050286462A1

    公开(公告)日:2005-12-29

    申请号:US11165185

    申请日:2005-06-24

    摘要: An orthogonal frequency division multiplexing (OFDM) system with a multicell or multisector structure includes a plurality of base stations and mobile stations. Each of the base stations interleaves data for transmission to the mobile station, performs space-time coding (STC) on the interleaved data into a plurality of space-time code streams, selects one of the space-time code streams every predetermined code stream selection period such that different space-time code streams are transmitted to at least one cell or sector from among cells or sectors formed by the base station and other base stations, and outputs the selected space-time code stream as an OFDM symbol. Each of the mobile stations STC-decodes a space-time code stream obtained by performing Fourier transform on the OFDM symbol, deinterleaves the STC-decoded data, and channel-decodes the deinterleaved data into its original data.

    摘要翻译: 具有多单元或多单元结构的正交频分复用(OFDM)系统包括多个基站和移动站。 每个基站交织用于传输到移动站的数据,对交织的数据执行空时编码(STC)为多个时空码流,每隔预定码流选择选择一个时空码流 周期,使得不同的时空码流从由基站和其他基站形成的小区或扇区中发送到至少一个小区或扇区,并将所选择的时空码流作为OFDM符号输出。 每个移动台STC对通过对OFDM符号执行傅里叶变换获得的时空码流进行解码,对STC解码的数据进行解交织,并将解交织的数据进行通道解码为其原始数据。

    Method and apparatus for performing data buffering for Reed-Solomon (R-S) coding/decoding in a mobile communication system
    4.
    发明授权
    Method and apparatus for performing data buffering for Reed-Solomon (R-S) coding/decoding in a mobile communication system 有权
    用于在移动通信系统中对Reed-Solomon(R-S)编码/解码执行数据缓冲的方法和装置

    公开(公告)号:US07702990B2

    公开(公告)日:2010-04-20

    申请号:US11368533

    申请日:2006-03-07

    IPC分类号: H03M13/00

    CPC分类号: H04L25/4917

    摘要: A method and apparatus for performing Reed-Solomon (R-S) coding in a mobile communication system supporting a broadcast and multicast (BCMC) service are provided, where a determination is made as to whether a change in a broadcast overhead message (BOM) exist including information with parameters used for the BCMC service. A position of data in a new channel encoder buffer is calculated at a time when the BOM is changed. The channel encoder buffer is filled with predetermined data in an interval ranging from a start point of a buffer comprising data in the change point of the BOM to a point preceding a point of data first transmitted according to the changed BOM.

    摘要翻译: 提供了一种用于在支持广播和多播(BCMC)服务的移动通信系统中执行里德 - 所罗门(RS)编码的方法和装置,其中确定广播开销消息(BOM)是否存在变化,包括: 具有用于BCMC服务的参数的信息。 在BOM更改时计算新的通道编码器缓冲区中的数据位置。 信道编码器缓冲器以从包括BOM的变化点中的数据的缓冲器的起始点到根据改变的BOM首先发送的数据点之前的点的间隔中的预定数据填充预定数据。

    Method and apparatus for encoding/decoding Reed-Solomon code in a mobile communication system
    5.
    发明申请
    Method and apparatus for encoding/decoding Reed-Solomon code in a mobile communication system 有权
    用于在移动通信系统中对Reed-Solomon码进行编码/解码的方法和装置

    公开(公告)号:US20060253442A1

    公开(公告)日:2006-11-09

    申请号:US11368533

    申请日:2006-03-07

    IPC分类号: G06F17/30

    CPC分类号: H04L25/4917

    摘要: A method and apparatus for performing Reed-Solomon (R-S) coding in a mobile communication system supporting a broadcast and multicast (BCMC) service are provided, where a determination is made as to whether a change in a broadcast overhead message (BOM) exist including information with parameters used for the BCMC service. A position of data in a new channel encoder buffer is calculated at a time when the BOM is changed. The channel encoder buffer is filled with predetermined data in an interval ranging from a start point of a buffer comprising data in the change point of the BOM to a point preceding a point of data first transmitted according to the changed BOM.

    摘要翻译: 提供了一种用于在支持广播和多播(BCMC)服务的移动通信系统中执行里德 - 所罗门(RS)编码的方法和装置,其中确定是否存在广播开销消息(BOM)的变化,包括: 具有用于BCMC服务的参数的信息。 在BOM更改时计算新的通道编码器缓冲区中的数据位置。 信道编码器缓冲器以从包括BOM的变化点中的数据的缓冲器的起始点到根据改变的BOM首先发送的数据点之前的点的间隔中的预定数据填充预定数据。

    Apparatus and method for decoding Reed-Solomon code
    6.
    发明申请
    Apparatus and method for decoding Reed-Solomon code 审中-公开
    用于解码里德 - 所罗门码的装置和方法

    公开(公告)号:US20060085726A1

    公开(公告)日:2006-04-20

    申请号:US11239689

    申请日:2005-09-30

    IPC分类号: H03M13/00

    摘要: An apparatus for receiving and decoding a double-coded symbol in a communication system using a double coding scheme for encoding a Reed-Solomon (RS)-coded symbol with a predetermined scheme for communication. In the apparatus, an inner decoder receives a frame formed with the double-coded symbols, and primary-decodes the received frame. An RS decoding buffer stores an output of the inner decoder frame by frame, and an RS decoder reads symbols in the same column from symbols of a frame stored in the RS decoding buffer, performs RS decoding on the read symbols, and generates an RS decodable indicator value for each symbol. A log likelihood ratio (LLR) update unit updates an LLR value using the RS decodable indicator value, and outputs the updated LLR value to the inner decoder.

    摘要翻译: 一种用于在通信系统中使用双编码方案来接收和解码双编码符号的装置,所述双重编码方案用于用用于通信的预定方案来编码里德 - 所罗门(RS)编码符号。 在该装置中,内部解码器接收由双编码符号形成的帧,并且对接收的帧进行一次解码。 RS解码缓冲器逐帧存储内部解码器的输出,RS解码器从存储在RS解码缓冲器中的帧的符号中读取同一列中的符号,对读取的符号执行RS解码,并生成RS可解码 每个符号的指标值。 对数似然比(LLR)更新单元使用RS可解码指示符值更新LLR值,并将更新的LLR值输出到内部解码器。