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    • 45. 发明公开
    • 무선 통신 시스템에서 파일럿 심볼을 구성하기 위한 방법들 및 장치
    • 用于在无线通信系统中配置引导符号的方法和装置
    • KR1020090057327A
    • 2009-06-04
    • KR1020097008453
    • 2007-09-27
    • 퀄컴 인코포레이티드
    • 왕,마이클마오
    • H04L27/26H04L27/20
    • H04L27/2613H03M13/271H03M13/2771H04L1/0041H04L1/0066H04L1/0069H04L1/0071H04L5/0007H04L5/0048H04L5/0083H04L25/0226H04L27/2626
    • Methods and apparatus for constructing a pilot symbol for a communication frame transmitted in a wireless communication system, such as an OFDM system, are disclosed. In particular, the methods and apparatus generate at least one pseudo-random noise sequence having at least a predetermined length, where the at least one pseudo-random noise sequence represents a system configuration of a wireless system. A time domain symbol sequence is modulated with the at least one pseudo-random noise sequence to create a timing acquisition pilot symbol. The modulated acquisition pilot symbol is further masked to a prescribed frequency profile and placed in a frame for wireless transmission. Accordingly, different system configurations can be communicated from a transmitter to a receiver with the acquisition pilot symbol modulated with correspondingly different pseudo-random noise sequences, while affording low complexity required to process the acquisition pilot symbol and a minimum peak to average power ratio when using QPSK modulation.
    • 公开了在诸如OFDM系统的无线通信系统中发送的用于构建通信帧的导频符号的方法和装置。 特别地,所述方法和装置产生至少一个具有至少预定长度的伪随机噪声序列,其中至少一个伪随机噪声序列表示无线系统的系统配置。 利用至少一个伪随机噪声序列调制时域符号序列以产生定时获取导频符号。 调制获取导频符号被进一步屏蔽到规定的频率分布,并被放置在用于无线传输的帧中。 因此,不同的系统配置可以从发射机传送到接收机,其中采集导频符号用对应的不同的伪随机噪声序列进行调制,同时提供处理采集导频符号所需的低复杂度和使用时的最小峰均功率比 QPSK调制。