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    • 7. 发明申请
    • METHOD AND SYSTEM OF INTERLEAVING FOR A MULTIPLE-INPUT MULTIPLE-OUTPUT MULTI-BAND OFDM COMMUNICATION SYSTEM
    • 多输入多输出多频带OFDM通信系统的交织方法和系统
    • WO2008110998A2
    • 2008-09-18
    • PCT/IB2008/050903
    • 2008-03-12
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.YANG, JunWANG, Dong
    • YANG, JunWANG, Dong
    • H04L27/26
    • H04L1/0071H03M13/275H04L1/06
    • A multiple-input multiple-output multi-band OFDM transmission system (400) employs a data interleaving arrangement that is backwards compatible with specifications for a legacy interleaver. In one embodiment, an input data stream is parsed into two or more separate data streams by a round robin parser (310) and each of the separate data streams is shifted by a corresponding number of symbols and then interleaved by a legacy interleaver (340i). In another embodiment, data for a plurality (N*i) of symbols is split into N sequential groups of data, each group corresponding to one of N MIMO spatial streams, each stream including data for i symbols. Each group is then interleaved by a legacy interleaver (520i). In a third embodiment, an input data stream is interleaved by a scaled version of the legacy interleaver (610), and then parsed by a round-robin parser (620).
    • 多输入多输出多频带OFDM传输系统(400)采用与传统交织器的规范向后兼容的数据交织布置。 在一个实施例中,由循环解析器(310)将输入数据流解析成两个或更多个单独的数据流,并且每个单独的数据流移位相应数量的符号,然后由传统交织器(340i)交织, 。 在另一个实施例中,用于多个(N×i)个符号的数据被分成N个连续的数据组,每个组对应于N个MIMO空间流中的一个,每个流包括用于i个符号的数据。 然后每个组由传统交织器(520i)交织。 在第三实施例中,输入数据流由传统交织器(610)的缩放版本交织,然后由循环解析器(620)解析。
    • 9. 发明申请
    • SYSTEM AND METHOD OF TRANSMITTING AND RECEIVING MIMO-OFDM SIGNALS
    • 发送和接收MIMO-OFDM信号的系统和方法
    • WO2009016573A2
    • 2009-02-05
    • PCT/IB2008/053007
    • 2008-07-25
    • KONINKLIJKE PHILIPS ELECTRONICS, N.V.WANG, DongYANG, Jun
    • WANG, DongYANG, Jun
    • H04L1/06H04L27/26
    • H04L1/0606H04L1/0064H04L1/0071H04L27/2626H04L27/2647
    • A communication system transmits data through multiple transmitters (140/142, 540/542). The system includes a symbol mapper (116/118, 516/518), a symbol spreader (120/122, 520/522) and a symbol interleaver (125, 525). The symbol mapper (116/118, 516/518) receives one bit stream of the data and maps at least one set of bits of the one bit stream to a corresponding set of symbols of a symbol stream. The set of symbols includes at least two symbols. The symbol spreader (120/122, 520/522) receives the set of symbols from the symbol mapper (116/118, 516/518) and spreads the set of symbols so that each of the spread symbols contain all the information of the set of symbols from the symbol mapper (116/118, 516/518). The symbol interleaver (125, 525) receives the spread symbols from symbol spreaders (120/122, 520/522) of all the symbol streams, distributes the spread symbols to non-adjacent subcarriers of the transmitters (140/142, 540/542) so that the spread symbols from the same symbol spreader are distributed to different subcarriers of different transmitters.
    • 通信系统通过多个发射机(140/142,540/542)发射数据。 该系统包括符号映射器(116/118,516/518),符号扩展器(120/122,520/522)和符号交织器(125,525)。 符号映射器(116/118,516/518)接收数据的一个比特流,并将该一个比特流的至少一组比特映射到符号流的相应符号集合。 该组符号包括至少两个符号。 符号扩展器(120/122,520/522)接收来自符号映射器(116/118,516/518)的一组符号并扩展该符号集合,使得每个扩展符号包含该集合的所有信息 来自符号映射器(116/118,516/518)的符号。 符号交织器(125,525)从所有符号流的符号扩展器(120/122,520/522)接收扩展符号,将扩展符号分配给发送器(140/142,540/542)的非相邻子载波 ),以便来自相同符号扩频器的扩展符号被分配给不同发射机的不同子载波。