US 2009/0022139 A1 · WIRELESS PERSONAL AREA NETWORK ZIGBEE RECEIVER AND RECEIVING METHOD THEREOF

Abstract

There are provided a wireless personal area networks (WPAN) Zigbee receiver and a receiving method thereof that can obtain a spreading gain by a reduction in data rate. A wireless personal area network Zigbee receiver receiving a signal packet including a plurality of functional units having a plurality of symbols, the plurality of functional units each repeated as many as a predetermined extension number according to an aspect of the invention includes: a preamble detection unit detecting a, and generating a preamble synchronization; and an SFD synchronization unit comparing, each symbol of SFD units included in the signal packet with a predetermined SFD reference symbol continuously and repeatedly as many as the extension number, and generating an SFD synchronization signal when each of the symbols of the SFD units is equal to the SFD reference symbol as many as the extension number.

Claims16

Dependent claims

A wireless personal area network Zigbee receiver receiving a signal packet including a plurality of functional units having a plurality of symbols, the plurality of functional units each repeated as many as a predetermined extension number, the wireless personal area network Zigbee receiver comprising:

a preamble detection unit correlating a preamble reference symbol with each of the symbols of the plurality of functional units of the signal packet continuously and repeatedly as many as the extension number to obtain and accumulate correlation values, detecting a preamble by using a cumulative correlation value obtained by accumulating the correlation values, and generating a preamble synchronization signal if the extension number is previously determined;
and
an SFD synchronization unit comparing, when the preamble synchronization signal is input, each symbol of SFD units included in the signal packet with a predetermined SFD reference symbol continuously and repeatedly as many as the extension number, and generating an SFD synchronization signal when each of the symbols of the SFD units is equal to the SFD reference symbol as many as the extension number.

A receiving method of a wireless personal area network Zigbee receiver receiving a signal packet including a plurality of functional units having a plurality of symbols, the plurality of functional units each repeated as many as a predetermined extension number, the receiving method comprising:

correlating a preamble reference symbol with each of the symbols of the plurality of functional units of the signal packet continuously and repeatedly as many as the extension number to obtain and accumulate correlation values, detecting a preamble by using a cumulative correlation value obtained by accumulating the correlation values, and generating a preamble synchronization signal if the extension number is previously determined (preamble detecting operation);
and
comparing each symbol of SFD units included in the signal packet with a predetermined SFD reference symbol continuously and repeatedly as many as the extension number when the preamble synchronization signal is detected, and generating an SFD synchronization signal when each of the symbols of the SFD units is equal to the SFD reference symbol as many as the extension number (SFD detecting operation).

Dependencies are inferred from the claim text.

Wireless personal area network zigbee receiver and receiving method thereof

Life of this patent

Wireless personal area network zigbee receiver and receiving method thereof

Life of this patent

Abstract

Claims16