srishtansh
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can contact me at : srishtanshp@nanopowercommunications.com
Posts: 33 
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Post by srishtansh on May 2, 2013 9:43:10 GMT
How a fixed pattern in preamble helps in synchronization of transmitter and reciever ? Is reciever having any previous knowledge of this pattern ?
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Post by T C Surendhar on May 3, 2013 8:26:12 GMT
How a fixed pattern in preamble helps in synchronization of transmitter and reciever ? Is reciever having any previous knowledge of this pattern ? The preamble pattern 10101010 will be sent from transmitter as LSB first bit order. So Receiver will always expect this sequence 10101010 as LSB first bit order. By detecting these bits sequentially, receiver will sync with transmitter. so that preamble will be the first byte of that received packet, then receiver will consider next bytes will be access address, PDU and CRC. Otherwise receiver will wait for proper preamble sequence. |
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srishtansh
New Member
can contact me at : srishtanshp@nanopowercommunications.com
Posts: 33
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Post by srishtansh on May 3, 2013 9:19:40 GMT
How a fixed pattern in preamble helps in synchronization of transmitter and reciever ? Is reciever having any previous knowledge of this pattern ? The preamble pattern 10101010 will be sent from transmitter as LSB first bit order. So Receiver will always expect this sequence 10101010 as LSB first bit order. By detecting these bits sequentially, receiver will sync with transmitter. so that preamble will be the first byte of that received packet, then receiver will consider next bytes will be access address, PDU and CRC. Otherwise receiver will wait for proper preamble sequence. So does it mean that reciever will have previous knowledge of preamble sequence. |
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Post by T C Surendhar on May 3, 2013 10:36:15 GMT
The preamble pattern 10101010 will be sent from transmitter as LSB first bit order. So Receiver will always expect this sequence 10101010 as LSB first bit order. By detecting these bits sequentially, receiver will sync with transmitter. so that preamble will be the first byte of that received packet, then receiver will consider next bytes will be access address, PDU and CRC. Otherwise receiver will wait for proper preamble sequence. So does it mean that reciever will have previous knowledge of preamble sequence. yes, It has previous knowledge about preamble sequence. that is the protocol. |
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srishtansh
New Member
can contact me at : srishtanshp@nanopowercommunications.com
Posts: 33
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Post by srishtansh on May 7, 2013 10:31:41 GMT
So does it mean that reciever will have previous knowledge of preamble sequence. yes, It has previous knowledge about preamble sequence. that is the protocol. thankyou |
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