首页>
外国专利>
Unified synchronous ranging channel structure and ranging code generation and detection in wireless OFDMA systems
Unified synchronous ranging channel structure and ranging code generation and detection in wireless OFDMA systems
展开▼
机译:无线OFDMA系统中的统一同步测距信道结构以及测距代码生成和检测
展开▼
页面导航
摘要
著录项
相似文献
摘要
A unified synchronous ranging channel is provided. The unified synchronous ranging channel has a ranging cyclic prefix length that is the same as a cyclic prefix length of a data channel. The unified synchronous ranging channel is used for one of initial ranging, handover ranging, and periodic ranging between a mobile station and a femto base station. In one embodiment, the synchronous ranging channel spans over a two-dimensional radio resource region having a first number of subcarriers along frequency domain, a second number of OFDM symbols along time domain, and a third number of time-domain repetition. At the transmit side, a ranging code sequence is generated by applying a fixed time-domain cyclic shift per OFDM symbol to a root sequence. At the receive side, the ranging code sequence is decoded by using a summation module, a likelihood-combining module, and a modified peak test module that normalizes a peak value.
展开▼