協調式多點傳輸系統之通訊方法COMMUNICATION METHOD OF COORDINATED MULTI-POINT TRANSMISSION SYSTEMS

專利類型

發明

專利國別 (專利申請國家)

美國

專利申請案號

13/527,973

專利證號

US 8,792,446 B2

專利獲證名稱

協調式多點傳輸系統之通訊方法COMMUNICATION METHOD OF COORDINATED MULTI-POINT TRANSMISSION SYSTEMS

專利所屬機關 (申請機關)

國立清華大學

獲證日期

2014/07/29

技術說明

本發明係揭露一種協調式多點傳輸系統之通訊方法，根據Zadoff-Chu序列經過一組設計的循環位移產生複數個訓練序列，而此訓練序列是一組具有強健性正交訓練序列。使用此組訓練序列之前置訊號可於不同基地台／中繼站使用相同頻帶同時間傳送，且可使不同基地台／中繼站傳送前置訊號間的相互干擾達到最小。在多重前置訊號混合的情況下，行動台仍可以在接收訊號時，進行多基地台／中繼站之多重訊號載波頻率偏移估計，並且獲得相當良好的估計效能。 This invention discloses a communication method in coordinated multi-point transmission systems. Based on the Zadoff-Chu sequences, we can generate a set of designed training sequences by circular shifting in time samples, and the training sequences is a set of robust orthogonal training sequence (ROTS). Preamble signals that use the training sequence set can be transmitted from different base stations/relays at the same time in same band and minimize the mutual interference coming from different base stations/relays. In the case with multiple mixed preamble signals, the mobile station can still use the received signal to estimate multiple carrier frequency offsets of the corresponding base stations/relays, and has a good estimation performance.

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