One more snip - cover letter
Applicant: KWC Corp. FCC ID: OVFKWC-2135
Cover Letter
Federal Communications Commission
Authorization and Evaluation Division
Re: Application for Cellular and PCS Transceiver Type Acceptance
Kyocera Wireless Corporation (KWC) herein submits the Application for Equipment
Authorization (FCC Form 731) and Exhibits for Type Acceptance of a Cellular & PCS
Transceiver, FCC ID: OVFKWC-2135.
Applicant: Kyocera Wireless Corporation
10290 Campus Point Drive
San Diego, CA 92121-1522
Manufacture: Kyocera Wireless Corporation
10290 Campus Point Drive
San Diego, California 92121
The equipment, KWC model # 2135, is for mobile station cellular and PCS system use. The
2135 is in full compliance with all parts of EIA/TIA/IS-98-B Mobile Station-Land Station
Compatibility Specification, issue July 1998, and also in full compliance with all parts of
ANSI J-STD-018, Recommended Minimum Performance Requirements for 1.8 to 2 GHz
Code Division Multiple Access (CDMA) Personal Stations, issue July 1996.
Information concerning how the ESN protection requirements are met is provided in Exhibit
3.
Kyocera Wireless Corporation
Robert J Scodellaro
EMC Engineer, Staff/Manager
----
Applicant: KWC Corp. FCC ID: OVFKWC-2135
List of Exhibits
Exhibit Description FCC Reference
1 Certification of Test Data 2.911
2 General Information 2.1033(c), 2.1061,
3 ESN Protection 22.919
4 RF Output Power Measured Data - Cellular 2.1046
5 RF Output Power Measured Data - PCS 2.1046, 24.232
6 Modulation Audio Response Measured Data 2.1047(a)
7 Modulation Limiting Measured Data 2.1047(b), 22.917
8 Occupied Bandwidth and Spurious Emission Measured
Data - Cellular
2.1049, 22.917
9 Occupied Bandwidth and Spurious Emission Measured
Data - PCS
2.1049, 24.238
10 Conducted Harmonics Emissions Measured Data - Cellular 2.1051, 22.917,
22.901(d)
11 Conducted Harmonics Emissions Measured Data - PCS 2.1051, 24.238
12 Frequency Stability vs. Temperature and Voltage Measured
Data - Cellular
2.1055
13 Frequency Stability vs. Temperature and Voltage Measured
Data - PCS
2.1055, 24.235
14 Measurement Procedures and Techniques
15 Circuit Diagram 2.1033(c)
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Applicant: KWC Corp. FCC ID: OVFKWC-2135
all modes, the mobile receiver monitors the received signal and adjusts the
frequency of the VCTCXO , this corrects any errors between the mobile
frequency and the base station transmitter. The mobile is locked to the base
station.
(c) Circuit description for spurious radiation suppression
The circuit provided for suppression of spurious radiation is in the schematics.
The transmitter front end provides filtering of the RF signal in order to meet FCC
specifications. For radiated spurious suppression, proper design techniques and
the use of proper shielding techniques reduced the emission levels well below
the permissible FCC limit.
(d) Circuit description for limiting modulation
The circuit provided for limiting modulation is in the schematics.
AMPS Mode
The F3E audio modulation is accomplished through the use of Digital Signal
Processor (DSP). The audio signal is converted to digital samples at 8 kHz
sample rate. The samples are filtered, integrated, interpolated, and phase
modulated at a 40 kHz rate. The resulting signal is then decomposed into I and
Q signals, oversampled again at 160 kHz rate, and then sent to the digital-to-analog
converter after proper filtering. The transmit audio modulation limiting
function is performed digitally in the DSP. The pre-emphasis is performed
through an IIR filter and the filtering of audio frequencies is performed through a
FIR filter in DSP. The combined performance of these filters is shown in Exhibit
6 along with the actual audio frequency response of the modulated carrier
signal. The DSP clocks are locked to the reference VCTCXO output signal, and
maintained within ± 2.5 ppm tolerance.
CDMA Mode
The CDMA mode is described in the following pages from the TIA/EIA /IS-95B
Standard. The justification for the CDMA bandwidth of 1.25 MHz is that the chip
rate is 1.2288 MHz (see page 6-35 of IS-95B). The 1.25MHz is measured at the
3dB down bandwidth. Channel spacing is normally set at this 1.25 MHz. In
addition the reference baseband filtering requirements are shown on page 6-60
of IS95B. The Z-transform filter coefficient for the recommended baseband filter
are shown on page 6-61, and also yield a “necessary bandwidth” of 1.25 MHz
based on optimal detection and channel capacity theory.
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From a PDF file, FCC site is very slow.
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