Pilot signals for synchronization and/or channel estimation
First Claim
1. A method of transmitting pilot bit patterns for at least one of frame synchronization or channel estimation in a mobile communication system, the method comprising:
- transmitting 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), andC8=(000011101100101), whereinat least two of the pilot bit patterns are used by one of a mobile terminal or a communication apparatus for at least one of frame synchronization or channel estimation.
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Abstract
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.
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Citations
11 Claims
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1. A method of transmitting pilot bit patterns for at least one of frame synchronization or channel estimation in a mobile communication system, the method comprising:
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transmitting 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), wherein at least two of the pilot bit patterns are used by one of a mobile terminal or a communication apparatus for at least one of frame synchronization or channel estimation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification