IEEE 802.15.4c-2009 pdf free.IEEE Standard for Information technology-Telecommunications and information exchange between systems-Local andmetropolitan area networks-Specific requirements Part 1 5.4: Wireless Medium Access Control (MAC) and Physical Layer (PHY) Specifications for Low-Rate Wireless Personal Area Networks (WPANs).
6.6a.2.6 Chip transmission order
During each symbol period, the least significant chip. c0, is transmitted first, and the most significant chip, c15, is transmitted last.
6.6a.3 780 MHz band radio specification
6.6a.3.1 Operating frequency range
The 780 MHz O-QPSK PI-IY operates in the 779—787 Mt-Iz frequency band.
6.6a.3.2 Transmit PSD mask
When operating in the 780 MHz band, the transmitted spectral products shall be less than the limits specified in Table 29b. For both relative and absolute limits, average spectral power shall be measured using a 100 kHz resolution bandwidth. For the relative limit, the reference level shall be the highest average spectral power measured within ± 600 kl-Iz of the carrier frequency.
6.6a.3.3 Symbol rate
The O-QPSK PHY symbol rate shall be 62.5 ksymbols when operating in the 780 MHz band with an accuracy of± 40 ppm.
6.6a.3.4 Receiver sensitivity
Under the conditions specified in 6.1.7, a compliant device shall be capable of achieving a sensitivity of
—85 dBm or better.
6.6a.3.5 Receiver jamming resistance
The minimum jamming resistance levels are given in Table 29c, The adjacent channel is one on either side of the desired channel that is closest in frequency to the desired channel, and the alternate channel is one more removed from the adjacent channel. For example, when channel 2 is the desired channel, channel I and channel 3 are the adjacent channels, and channel () is the alternate channel.
Thc adjacent channel rejection shall be measured as follows: the dcsired signal shall be a compliant
780 MHz IEEE 802.15.4 O-QPSK PHY signal, as defined by 6.6a.2, of pseudo-random data. Thc desired
signal is input to ihe reccivcr at a level 3 dB above the maximum allowed receiver sensitivity given in
In either the adjacent or the alternate channel, a compliant signal, as defined by 6.6a.2, is input at the relative level specified in Tablc 29c. Thc test shall be performed for only one interfering signal at a time. The receiver shall mccl the error rate criteria defined in 6.1.7 under these conditions.
change the teiin 6.9 as shown (based an IEEE Sid 802. 15.4a text:
6.9 General radio specifications
The specifications in 6.9.1 through 6.9.9 apply to the 2450 MHz DS PHY described in 6.5.1 through 6.5.3, the CSS PHY described in 6.5a, the UWI3 PHY described in 6.8a, and the 868,915 MHz PHYs described in 6.6 through 6.8. and the 780 MHz PFIYs described in 6.6a and Clause 2 and, with the exception of 6.9.3 and
6.9.5, apply to all PHY implementations including the alternate PI-lYs. The specification of 6.9.3 does not apply to the CSS PHY nor the LJWH PHY. The specification of 6.9.5 does not apply to the UWI3 PHY.IEEE 802.15.4c pdf download.