Operational Description

FCC ID: PKTP1BAP

Operational Description

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FCCID_167234

1250 Bayhill Drive, Suite 113 San Bruno Ca 94066 U.S.A. Telephone: (650) 794 2615 Facsimile: (650) 794 2668 Email: rquayle@ipwireless.com August 15, 2001 RE: IPWireless Compliance with 47 CFR 21.122 To Whom it May Concern: Derivation of Data Rates to Show compliance to 47 CFR 21.122 The air interface employed by the Model AP uses complex spreading of the baseband data as a result of the complex direct sequence code division multiple access (DS- CDMA) multiplexing and QPSK modulation. The air interface chip rate used by the Model AP is 7.68 Mcps. Using QPSK and a spreading factor (SF) of one, the maximum baseband data rate supported by the AP is thus two times the chip rate, or 15.36 Mbps. To comply with 47CFR21.122, a bit rate of 10 Mbps is required. This is due to the necessary bandwidth being specified as 12 MHz, which includes 2 MHz of guard channel from adjacent channel transmitters. The Model AN air interface supports a maximum bit rate that is 28% higher than the specified requirement including the guard band, and is 53.6% higher than the requirement if the guard band is not included in the calculation as allowed in 21.122 (a).


Document Created: 2001-09-04 08:19:24
Document Modified: 2001-09-04 08:19:24
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