HP 83236B S Interface manual Glossary

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Glossary

Glossary

Access Channel A reverse CDMA channel used by mobile stations for communicating to the base station. The access channel is used for short signaling message exchanges such as call originations, responses to pages, and registrations. The access channel is a slotted random access channel.

Added White Gaussian Noise (AWGN) A broadband noise source used in conjunction with a CDMA signal source to test receiver performance.

Autostart A feature of the Test Set’s IBASIC controller that automatically runs any program in non-volatile memory when the power switch is set to ON.

Average Power A method of measuring the signal level of a CDMA transmitter. The sampled signal is quantified in terms of average level. Multiple samples are then time-averaged to display a final power measurement.

Base Station (BS) A fixed-location transceiver in a communications network. The land station in a cellular or PCS network carrying on a radio communication with mobile units.

CDMA See Code Division Multiple Access.

CDMA Channel The set of channels transmitted from the base station and the mobile stations on a given frequency. See also forward CDMA channel and reverse CDMA channel.

CDMA Frequency Assignment A

1.23MHz segment of spectrum centered on one of the 30 kHz channels of the existing analog system.

CDMA Generator A functional block in the CDMA Cellular Adapter that generates pilot PN sequences with externally or internally applied channel data. A noise generator is also incorporated that is capable of generating calibrated Eb/No signals.

Cellular Adapter The HP 83203B or 83205A CDMA digital cellular "top box" for the HP 8921A Cell Site Test Set.

Channel A transmission path between two points. It is usually the smallest subdivision of a particular transmission system by means of which a single type of communication service is provided.

Code Channel A subchannel of a forward CDMA channel. A forward CDMA channel contains 64 code channels. Code channel zero is assigned to the pilot channel. Code channels 1 through 7 may be assigned to either the paging channels or the traffic channels. Code channel 32 may be assigned to either a sync channel or a traffic channel. The remaining code channels may be assigned to traffic channels.

Code Division Multiple Access (CDMA)

Atechnique for spread-spectrum, multiple- access digital communications that creates channels through the use of unique code sequences.

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Contents CDMA/PCS Base Station Test Software, User’s Guide Restricted Operating Overview Conventions Used in this Book Contents Making Measurements Receiver Sensitivity Operating Overview Setting the Test System Beep Glossary Index Getting Started Introduction You must supply Required EquipmentSynth REF Load and Run the CDMA/PCS BS Test Software Tests Main Menu screen CDMA/PCS Test Software main menu features Select Configuration Information Menu Configure the SoftwareScroll to and select your band of interest User k1 If You Had ProblemsPerform Cdma Tests Perform Cdma Tests Making Measurements Making Measurements Transmitter Measurements Receiver Measurements Other OverviewRequirements Average PowerOverview Information Menu under TX Measurement Path Loss StepsModulation Quality Rho Measurement not Correlating in , Troubleshooting, on Code Domain Power Menu Code Domain Timing Details on the use of the Code Domain Analyzer screen Code Domain Phase Already selected Analyzer Transmit SpectrumSteps Go to Spectrum Analyzer @ Present Chan Steps Go to Spectrum Analyzer & Enter Freq Transmit Spectrum Receiver Sensitivity Main menu, enter the Base Station Channel number Receiver Performance in Additive Noise Error Rate FER is measured at each Eb/No levelEb/No Level Search for PN Offset PN Offset not Found Check Even-Second Clock Check for a valid clock signal from the base stationCorrelating in , Troubleshooting, on Check Even-Second Clock Operating Overview Reference ConfigurationInformation To select a new PCS Band Selecting a PCS BandChannel plans for PCS Band selections You must know the following loss values Compensating for TX and RX Measurement Path LossBeep Saving Configuration Information to MemoryRequirements Steps Loading Configuration Information from MemoryPurging Configuration Information from Memory Autostart Feature Using AutostartTurning On Turning OffConnections Viewing Instrument ConnectionsSetting the Test System Beep To Memory on Cdma Base Station Operating Overview Troubleshooting Troubleshooting Memory Overflow Errors Errors When Loading and Running the SoftwareTest System Configuration Errors at Runtime Compensation not performed. Check Duplex OUT cable. Retry? Errors When Loading and Running the Software Cdma Measurement not Correlating Errors While Attempting MeasurementsErrors While Attempting Measurements Incorrect Base Station Channel entry Frame Error Rate Receiver MeasurementsErrors While Attempting Measurements Questionable Measurement Results Average PowerCode Domain Rho MeasurementsMeasurements Receiver TestsSensitivity tests random data not selected for signal source Questionable Measurement Results Glossary Glossary Modulation Quality See Rho Glossary Glossary Glossary Index Index FER Index Oqpsk PCS Qpsk UCT Walsh chip
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