JOINT SYNCHRONIZER AND DECODER
    1.
    发明申请
    JOINT SYNCHRONIZER AND DECODER 审中-公开
    联合同步器和解码器

    公开(公告)号:WO2005027451A1

    公开(公告)日:2005-03-24

    申请号:PCT/IB2004/003247

    申请日:2004-09-10

    Abstract: A joint synchronizer and decoder that implements two decision aided processes, which are referred to as "decision aided candidate selection" and "decision aided synchronization and decoding." Decision aided 'candidate selection may be used to select a carrier frequency offset by selecting among a number of candidates for this parameter based on an indication of decoding success. Decision aided synchronization and decoding may be used for phase tracking based on an indication of decoding success. Although these joint synchronizing and decoding techniques may be implemented together, they may also be implemented independently. The joint synchronizer and decoder may be implemented within a return channel receiver in a DVB-RCS system using turbo coding and quadrature phase shift key (QPSK) data modulation.

    Abstract translation: 一种实现两个决策辅助过程的联合同步器和解码器,被称为“决策辅助候选选择”和“决策辅助同步和解码”。 决策辅助候选者选择可以用于基于解码成功的指示通过在该参数的候选数中选择来选择载波频率偏移。 决策辅助同步和解码可以用于基于解码成功的指示的相位跟踪。 虽然这些联合同步和解码技术可以一起实现,但是它们也可以独立地实现。 联合同步器和解码器可以在使用turbo编码和正交相移键(QPSK)数据调制的DVB-RCS系统中的返回信道接收机内实现。

    RETURN LINK ADAPTATION ALGORITHM
    3.
    发明申请

    公开(公告)号:WO2005104804A3

    公开(公告)日:2005-11-10

    申请号:PCT/US2005/015017

    申请日:2005-04-28

    Abstract: An apparatus, system, and method of improving the E s IN 0 ratio performance of a wireless device. The apparatus, system and method include measuring an E s IN 0 ratio in a communicated return link burst, and, upon failure of the E s IN 0 ratio to meet a predetermined threshold, probing for an available switch to a less protested communication mode to improve the E s IN 0 ratio. The probing may include transmitting a full power SYNC burst, measuring the E s IN 0 ratio correspondent to the full power SYNC burst, and comparing the measured E 5 IN 0 ratio correspondent to the full power SYNC burst to the predetermined threshold.

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