Initial synchronization acquiring device and method for parallel processed DS-CDMA UWB system and DS-CDMA system's receiver using the same
First Claim
1. An initial synchronization acquiring device in a parallel processed DS-CDMA UWB system, the device comprising:
- a correlator for correlating input signals and outputting correlation result values; and
an initial synchronizer for tuning initial symbol synchronization and frame synchronization by using the correlation result values received from the correlator and then storing combining mark values and a synchronization position value in a register.
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Abstract
Provided are an initial synchronization acquiring device and method in a parallel processed DS-CDMA UWB system and a DS-CDMA UWB system'"'"'s receiver using the same. The initial synchronization acquiring device is constructed to include a correlator for correlating input signals and outputting correlation result values and an initial synchronizer for tuning initial symbol synchronization and frame synchronization by using the correlation result values received from the correlator and then storing combining mark values and a synchronization position value in a register, thereby making it possible to greatly decrease a system'"'"'s complexity, compared to the existing method of separately designing respective modules for acquiring packet synchronization and symbol synchronization in the existing CDMA system. Also, the initial synchronization acquiring device and method additionally compensates a synchronization error caused by a frequency offset generated between clocks used by a transmitter and a receiver and thereby can be efficiently used in the high-speed and parallel-processed DS-CDMA UWB system.
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Citations
16 Claims
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1. An initial synchronization acquiring device in a parallel processed DS-CDMA UWB system, the device comprising:
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a correlator for correlating input signals and outputting correlation result values; and
an initial synchronizer for tuning initial symbol synchronization and frame synchronization by using the correlation result values received from the correlator and then storing combining mark values and a synchronization position value in a register. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An initial synchronization acquiring method in a parallel processed DS-CDMA UWB system, the method comprising the steps of:
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(a) correlating input signals and outputting correlation result values;
(b) performing a symbol synchronization combining with respect to a reception signal of the correlation result values and then outputting a combining result value;
(c) calculating an energy value by using the combining result value and performing a noncoherent combining with respective to the calculated energy value and thereby outputting a discrimination result value; and
(d) storing the discrimination result value in a buffer and then, if combining mark values within the buffer are changed, obtaining a synchronization position value and storing the obtained synchronization position value and combining mark values in a register. - View Dependent Claims (9)
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10. A receiver using an initial synchronization acquiring device in a parallel processed DS-CDMA UWB system, the receiver comprising:
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an ADC (analog-to-digital converter) for receiving an analog signal into which a signal received from a transmitter is baseband-converted by an RF (Radio Frequency) processing block of a receiver, and then converting the analog signal into a digital signal;
a correlator for correlating the digital signals received from the ADC and outputting correlation result values; and
an initial synchronizer for tuning initial symbol synchronization and frame synchronization by using the correlation result values received from the correlator and then storing combining mark values and a synchronization position value in a register. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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Specification