The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property c
The frame words of the embodiments are suitable for frame synchronization and/or channel estimation. By adding the autocorrelation and/or cross-correlation functions of frame words, double maximum values equal in magnitude and opposite polarity at zero and middle shifts are obtained. This property can be used to slot-by-slot, double-check frame synchronization timing, single frame synchronization and/or channel estimation and allows reduction of the synchronization search time. Further, the present invention allows a simpler construction of a correlator circuit for a receiver. A frame synchronization apparatus and method using an optimal pilot pattern is used in a wide band code division multiple Access (W-CDMA) next generation mobile communication system.
대표청구항▼
What is claimed is: 1. A communication device adapted for receiving pilot bit patterns in a mobile communication system comprising: means for receiving pilot bit patterns through a physical channel having a radio frame with 15 slots, each slot including pilot bits having a length Npilot, where 2
What is claimed is: 1. A communication device adapted for receiving pilot bit patterns in a mobile communication system comprising: means for receiving pilot bit patterns through a physical channel having a radio frame with 15 slots, each slot including pilot bits having a length Npilot, where 2≦Npilot≦16, wherein pilot bit patterns included in the 15 slots of the radio frame includes at least two of the following pilot bit patterns: C1=(100011110101100), C2=(101001101110000), C3=(110001001101011), C4=(001010000111011), C5=(111010110010001), C6=(110111000010100), C7=(100110101111000), and C8=(000011101100101); and means for performing at least one of a frame synchronization or channel estimation based on the received pilot bit patterns. 2. The communication device of claim 1, wherein, when Npilot is equal to 5 or 6, the pilot bit patterns included in the 15 slots of the radio frame are as follows: Npilot = 5 Npilot = 6 Bit # 0 1 2 3 4 0 1 2 3 4 5 Slot #1 1 1 1 1 0 1 1 1 1 1 0 2 0 0 1 1 0 1 0 0 1 1 0 3 0 1 1 0 1 1 0 1 1 0 1 4 0 0 1 0 0 1 0 0 1 0 0 5 1 0 1 0 1 1 1 0 1 0 1 6 1 1 1 1 0 1 1 1 1 1 0 7 1 1 1 0 0 1 1 1 1 0 0 8 1 0 1 0 0 1 1 0 1 0 0 9 0 1 1 1 0 1 0 1 1 1 0 10 1 1 1 1 1 1 1 1 1 1 1 11 0 1 1 0 1 1 0 1 1 0 1 12 1 0 1 1 1 1 1 0 1 1 1 13 1 0 1 0 0 1 1 0 1 0 0 14 0 0 1 1 1 1 0 0 1 1 1 15 0 0 1 1 1 1 0 0 1 1 1. 3. The communication device of claim 1, wherein, when Npilot is equal to 7 or 8, the pilot bit patterns included in the 15 slots of the radio frame are as follows: Npilot = 7 Npilot = 8 Bit # 0 1 2 3 4 5 6 0 1 2 3 4 5 6 7 Slot #1 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 2 1 0 0 1 1 0 1 1 0 1 0 1 1 1 0 3 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 4 1 0 0 1 0 0 1 1 0 1 0 1 0 1 0 5 1 1 0 1 0 1 1 1 1 1 0 1 0 1 1 6 1 1 1 1 1 0 1 1 1 1 1 1 1 1 0 7 1 1 1 1 0 0 1 1 1 1 1 1 0 1 0 8 1 1 0 1 0 0 1 1 1 1 0 1 0 1 0 9 1 0 1 1 1 0 1 1 0 1 1 1 1 1 0 10 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 11 1 0 1 1 0 1 1 1 0 1 1 1 0 1 1 12 1 1 0 1 1 1 1 1 1 1 0 1 1 1 1 13 1 1 0 1 0 0 1 1 1 1 0 1 0 1 0 14 1 0 0 1 1 1 1 1 0 1 0 1 1 1 1 15 1 0 0 1 1 1 1 1 0 1 0 1 1 1 1. 4. The communication device of claim 2 or 3, wherein said physical channel is an uplink dedicated physical control channel (DPCCH). 5. The communication device of claim 3, wherein said physical channel carries a random access channel (RACH) when Npilot is equal to 8. 6. The communication device of claim 1, wherein, when Npilot is equal to 2, 4, 6 or 8, the pilot bit patterns included in the 15 slots of the radio frame are as follows: Npilot = 2 Npilot = 4 Npilot = 8 Npilot = 16 Symbol # 0 0 1 0 1 2 3 0 1 2 3 4 5 6 7 Slot #1 11 11 11 11 11 11 10 11 11 11 10 11 11 11 10 2 00 11 00 11 00 11 10 11 00 11 10 11 11 11 00 3 01 11 01 11 01 11 01 11 01 11 01 11 10 11 00 4 00 11 00 11 00 11 00 11 00 11 00 11 01 11 10 5 10 11 10 11 10 11 01 11 10 11 01 11 11 11 11 6 11 11 11 11 11 11 10 11 11 11 10 11 01 11 01 7 11 11 11 11 11 11 00 11 11 11 00 11 10 11 11 8 10 11 10 11 10 11 00 11 10 11 00 11 10 11 00 9 01 11 01 11 01 11 10 11 01 11 10 11 00 11 11 10 11 11 11 11 11 11 11 11 11 11 11 11 00 11 11 11 01 11 01 11 01 11 01 11 01 11 01 11 11 11 10 12 10 11 10 11 10 11 11 11 10 11 11 11 00 11 10 13 10 11 10 11 10 11 00 11 10 11 00 11 01 11 01 14 00 11 00 11 00 11 11 11 00 11 11 11 00 11 00 15 00 11 00 11 00 11 11 11 00 11 11 11 10 11 01. 7. The communication device of claim 1, wherein, when Npilot is equal to 4, 8 or 16, the pilot bit patterns included in the 15 slots of the radio frame arc as follows: Npilot = 4 Npilot = 8 Npilot = 16 Symbol # 0 1 0 1 2 3 0 1 2 3 4 5 6 7 Slot #1 01 10 11 00 00 10 11 00 00 10 11 00 00 10 2 10 10 11 00 00 01 11 00 00 01 11 10 00 10 3 11 10 11 11 00 00 11 11 00 00 11 10 00 11 4 10 10 11 10 00 01 11 10 00 01 11 00 00 00 5 00 10 11 11 00 11 11 11 00 11 11 01 00 10 6 01 10 11 00 00 10 11 00 00 10 11 11 00 00 7 01 10 11 10 00 10 11 10 00 10 11 01 00 11 8 00 10 11 10 00 11 11 10 00 11 11 10 00 11 9 11 10 11 00 00 00 11 00 00 00 11 01 00 01 10 01 10 11 01 00 10 11 01 00 10 11 01 00 01 11 11 10 11 11 00 00 11 11 00 00 11 00 00 10 12 00 10 11 01 00 11 11 01 00 11 11 00 00 01 13 00 10 11 10 00 11 11 10 00 11 11 11 00 00 14 10 10 11 01 00 01 11 01 00 01 11 10 00 01 15 10 10 11 01 00 01 11 01 00 01 11 11 00 11. 8. The communication device of claim 7, wherein the physical channel uses space time transmit diversity (STTD) encoding. 9. The communication device of any one of claims 6 to 8, wherein the physical channel is a downlink dedicated physical control channel (DPCCH). 10. The communication device of claim 7, wherein the physical channel is a secondary common control physical channel (S-CCPCH) where Npilot is equal to 8 or 16.
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