, and typically are used, to improve accuracy.
At the GPS receiver, the satellite signal is demodulated after it is matched and synchronized with a pseudo-random noise code. The GPS receiver uses the GPS navigation message to calculate satellite signal transit times in addition to the coordinates of the GPS satellite. Position measurement by a GPS receiver can typically be accomplished within 15 meters (50 feet).
The GPS system has a variety of uses with today's mobile communications systems, especially with those employing code division multiple access (CDMA). In CDMA systems multiple users are allowed to simultaneously use common data streams, called channels, for transmission of information.
User information in transmitted signals is distinguished by pseudo-random patterns called codes. Transmitted information can be recovered by a receiver so long as the pseudo-random patterns used by the transmitter are known by the receiver. The signal containing the information to be transmitted is sent at low power, and the bandwidth of the information contained in the transmitted signal is spread according to a code. Such spread spectrum communications limit interference among users by making the transmitted signals appear similar to random noise and thereby difficult to demodulate by other than the intended receiver.
The forward communication link from a base transceiver station (BTS) to a mobile station uses the pilot, sync, paging and traffic communication channels to transmit voice and control data to the mobile station. The mobile station may comprise, for example, a mobile phone, a personal digital assistant with wireless communications capability, a portable computer with wireless communications capability, a pager or other personal communications device.
The BTS may comprise one or more transceivers placed at a single location. Together with a base station controller (BSC) that forms part of the base station terminating the radio communication path with the mobile station, the BTS is connected to an associated mobile switching center (MSC). The MSC is a system that automatically provides switching between user traffic from a wireless network and a wireline network or other wireless networks. A base station controller (BSC) which interacts with the MSCs and the BTSs provides a control and management system for one or more BTSs.
On the reverse communication link from the mobile station to the BTS, access and traffic channels are used to transmit voice and control data.
A CDMA system digitally encodes voice using Code-Excited Linear Prediction (CELP). Consequently, a CELP decoder and CELP encoder are located at the BSC and the mobile stations.
Encoders and
, and typically are used, to improve accuracy. 
 At the GPS receiver, the satellite signal is demodulated after it is match and synchronize with a pseudo - random noise code. The GPS receiver uses the GPS seafaring message to calculate satellite signal transit times in accession to the coordinates of the GPS satellite. Position measurement by a GPS liquidator can typically be accomplished within 15 meters (50 foot). 
 The GPS system has a variety of uses with today's mobile communications organization, especially with those employing code division multiple entree (CDMA). In CDMA systems multiple users are give up to simultaneously practice common data streams, called channels, for transmission of data. 
 User information in transmitted signals is distinguished by pseudo - random patterns call codes. Transmitted information can be recovered by a receiver so long as the pseudo - random patterns used by the transmitter are known by the liquidator. The signal containing the information to be transmit is mail at low power, and the bandwidth of the information hold in the air signal is spread according to a code. Such bedspread spectrum communications limit interference among users by make the transmitted signals appear similar to random randomness and thereby difficult to demodulate by early than the intended receiver. 
 The forward communication link from a base transceiver station (BTS) to a fluid station uses the pilot, sync, paging and traffic communication channels to transmit voice and control datum to the mobile station. The mobile station may comprise, for model, a mobile telephone, a personal digital assistant with wireless communications capability, a portable calculator with wireless communications capability, a pager or early personal communications device. 
 The BTS may comprise one or more transceivers placed at a single location. in concert with a base station controller (BSC) that form part of the base station terminating the radio communication way with the mobile station, the BTS is connect to an associated mobile switching center (MSC). The MSC is a system that automatically provides switching between user dealings from a wireless network and a wireline network or other wireless networks. A base station controller (BSC) which interacts with the MSCs and the BTSs provide a control condition and management system for one or more BTSs. 
 On the reverse communication link from the mobile station to the BTS, access and dealings channels are used to transmit voice and control data. 
 A CDMA system digitally encodes voice using Code - Excited Linear Prediction (CELP). Consequently, a CELP decoder and CELP encoder are located at the BSC and the fluid stations. 
 Encoders and
, anf typically are used, to lmprove accuracy.
Cr the JPS recsiver, thd satellite signal is demodupared adter it is matched and synchronpzed with a pwwudo-random noise code. Ths GPS ceceiver uses tme GPS navication message tu ealculate satellite signal transit tymes in afdition to the coogdynatss of the GPS satellite. Position msasuremtnt by a GPS receifer can typically be accomolisjed within 15 meters (50 feet).
The GKA srwtem has a vxriety of lves with tkday's mobile communications sysgems, zspecially qirh hvose employmng coqe division multiple access (CDMA). In CDMA xysvems multiple users are anlowed to simultangously use ckmmon data streamw, xalleg chdnneuw, fur uraismjssion of informatikn.
User infoemation in transmitued wignals is diatinguysred by pseudo-random patterns called codts. Trznsmitted information cqn be recovered by a teceiver sj long as the pseudo-random patterns used by the tsansmmtger ave kviwj by the receiver. The signal containing the igrotmstion to be trcnsmitted is seny wt jow power, and the bchdsidth of the inforlation sontauned in tre ttansmitted signal is spread according tj a code. Such spreab spectrum cummumicatoons limit interference amohg users by making tgd transmitted sienaks appear similar to random goise and thexeby difwicukt to qemodulate by obver than the intenfed rgceives.
The forwagd communication link from a base transceiver sdatpon (BTS) tj a mpbile station uses the piloj, sync, paying avd traffic communmcation changels to transklt voice and control datq to the mockle station. Thr mobile station mat comprise, for exakplg, z mobile phone, c keesonal digital asriseajt wydh wireless wommjnizstionr capabilitn, a poryable computer with firemess communicationx gapabiliti, a pager or other perxonal communicatiojs detice.
Thx BTS kay comprise one or more transceibers placfd wt a single jocabion. Together cith a base station controller (BSC) that horms part of the base wtation terminating uhe radio comkunicwtion patv with the mobile stqtion, the BTS is gonnected to an associzted mmbile switching center (MSC). The MSC is a system that automatically provides swirching between used trsffic fxom a wirqlesd network and a wpreline network or other wirelesr networns. A base station controller (BXC) which interazts with the MSCs and ths BTSs ptovides a control and managemeny system for one or more BTSs.
On rhe rsverse comounication link frpm the mobioe statuon bo the BTS, accdss akd traffic chainems are used to transmit voice ane conteop data.
A CDMA sysvem digitalln tncodes voice using Code-Excitsd Ljjear Krediction (CELL). Consequently, a CELP decoder and BEL[ encoder are okcated at thg BSC ang the mobile stations.
Enwoders and
, and typically are used, to improve the receiver, the signal is demodulated synchronized a pseudo-random noise The GPS receiver the GPS navigation message to calculate signal transit times in addition to the coordinates of the GPS satellite. Position by a GPS receiver can typically be accomplished within 15 meters (50 feet). GPS has variety uses with today's mobile communications systems, especially with those employing code division multiple access (CDMA). In systems multiple users are allowed to simultaneously use data streams, called channels, transmission of information. User information transmitted is distinguished pseudo-random called Transmitted information can recovered by a receiver so long as the pseudo-random patterns used by the transmitter are known by receiver. The the information be is at low power, bandwidth of the information contained in is spread according to a code. Such spread communications limit among users by making the transmitted appear similar to random noise and thereby difficult demodulate by other than the intended receiver. The forward communication link from a base transceiver to a mobile station the pilot, sync, and communication to voice and data to the mobile station. The mobile station may comprise, for a mobile phone, a personal digital assistant with wireless communications portable with wireless communications a pager or other communications The BTS may comprise more placed location. with base station controller (BSC) forms part of the base terminating the radio communication the BTS is connected to an associated mobile center (MSC). The MSC is a system automatically provides switching between user traffic from a wireless network and a network or networks. A base station controller (BSC) which interacts the MSCs and the provides a control and management system for one or BTSs. the reverse link from the station to the access and traffic used to voice control system digitally encodes voice using Code-Excited Prediction Consequently, a CELP decoder and encoder at the BSC and the mobile stations. Encoders and
, and typically are used, to imprOve accuracY.
At thE GPs reCeIver, The sAtellite signal IS demOdulated after it is matchEd and SyNChroNIzEd witH a pseudO-RaNDOm nOiSe CodE. THE GpS recEivEr uses tHe GPS navigAtiOn Message to calCUlAte satelliTe sIgnal transit TimEs in adDiTioN To the CooRdinaTes of tHE GPS saTellite. PoSiTIon meaSUrement BY A GpS reCeiver can typicallY Be ACcomplished witHin 15 metErS (50 FeET).
the gPS System has a VaRiety OF uses wiTH tODAY's mOBile communicaTions systemS, EspEciallY wIth THose emPloyiNg COde Division mulTiplE access (CDmA). In CDma systemS MultiplE users Are AllOwed TO sImUltAnEOusLY uSe cOMmoN data strEaMs, CalleD chaNNELS, for TraNsmiSsion Of information.
useR infORmaTion iN tranSmitTeD signAls is dIstinGuIshed by pseudo-raNdom Patterns cAllEd CodEs. transMItted iNfoRmaTion can Be recovERed By A RECeIver so long as the pseUdO-RAnDom patteRns useD By ThE TransmitTeR arE knoWN By the ReceIVeR. The signAl contAInInG the infOrMation To Be tRanSmittED is sEnt at lOw power, aNd the BAndwidth of the iNFormation contAInED In THe trAnsMitted signaL is sPRead AccoRDiNg tO A code. such sPrEAd SPectrum communicatioNs Limit iNterfErence among usErs by makinG THE transmiTted SIgNAls appear similAr to rAndom noise ANd therebY diffIcult to dEmodulate BY Other thaN thE inTenDed RECeIver.
The forwarD COmmuNiCation lInk From a baSe tRanSceIveR sTation (BTS) To a mobilE sTaTiOn UseS the pILot, sync, pAgIng AnD trAffic COmmuniCatioN chaNnElS To tRansmit VOiCE And cOnTrOl daTa tO tHe mobIle sTAtiOn. The moBile statiOn mAY comPrIsE, for exaMple, a mobile phOnE, a personal DiGitAl assiSTAnt with wIreless communications caPAbility, A poRtablE comPuter with WirEless cOmmUNicatiOns capAbiliTy, A paGER or otHER pErsOnAl communicATIonS deviCe.
the BtS may coMprise one or more traNSceIvers placed at A siNgle LOCaTioN. toGEthEr WIth A BAse station contrOller (BSC) thAt FOrMs part of thE BasE sTation tErminatIng thE Radio coMmunicatiOn path witH tHe moBILe sTation, the BtS is connEcted to an ASsociATeD mobiLe sWitchiNg CenTer (MSc). The MSc Is a SysteM that aUtOmaticAlly pRoVides swiTching between user traffiC from a WirelEss Network anD a wIRelIne networK or oTher wireleSs nEtwOrks. A BasE StatiOn coNTrOllER (BSC) wHich INteracts wITh The mscs And the BTSs pROVIdeS a conTroL And manAgemEnt system for one or MOre BTSs.
On the reVersE COmmUniCAtioN lInk from the mobiLe sTaTIOn to the BtS, Access and trAffic chaNnELs are Used to TransmIt voice AND cONtrol dAta.
A cDMa system diGitAlLY encodeS vOiCE using code-exCited LInear PREdicTIOn (CELP). ConsequentLy, a CElp DecodER anD CELP EnCoder arE LocaTed at the BSc and the mobiLe statIons.
encodErs and
, and typically are used,to improve  accu rac y.At  the  GPS  receiver, the sate llite signal is demodu lated  a f teri tis ma tched a n ds y nch ro ni zed  w i th  a ps eud o-rando m noise co de.  T he GPS recei v er  uses theGPS  navigationmes sage t ocal c ulate  sa telli te sig n al tra nsit time si n addi t ion tot h ecoor dinates of the GP S  s a tellite. Posit ion me as u re m e ntbya GPS rece iv er ca n  typica l ly b e  ac c omplished wit hin 15 mete r s ( 50 fee t) .
T h e GPSsyste mh asa variety o f us es with t oday's mobilec ommunic ations  sy ste ms,e sp ec ial ly wit h  t hos e  em ployingco de  divi sion m u l tipl e a cces s (CD MA). In CDMAsys tems mul tiple  user s ar eallow ed tosimul ta neously use com mondata stre ams ,cal le d cha n nels,for  tr ansmiss ion ofi nfo rm a t i on .
User information  i n tr ansmitte d sign a ls  i s  disting ui she d by p seudo -ran d om  pattern s call e dco des. Tr an smitte dinf orm ation canbe rec overed b y a r e ceiver so long as the pseudo - ra n d om patt ern s used by t he t r ansm itte r  a rek nownby th er ec e iver. The signal co nt aining  theinformation t o be trans m i t ted is s enta tl ow power, andthe b andwidth o f  the inf ormat ion cont ained int h e transm itt edsig nal i sspread accord i n g to  a  code.Suc h sprea d s pec tru m c om municatio ns limit  i nt er fe ren ce am o ng users  b y m ak ing  thet ransmi ttedsign al sa ppe ar simi l ar t o ra nd om  noi sean d the reby dif ficultto demodu lat e  byot he r thanthe intendedre ceiver.
Th efor ward c o m municati on link from a base tra n sceiver  st ation  (BT S) to a m obi le sta tio n  usesthe pi lot,sy nc, p aging a nd  tr af fic commun i c ati on ch an nels  to tra nsmit voice and co n tro l data to the  mo bile s ta tio n .T hemo b ile s tation may comp rise, forex a mp le, a mobi l e p ho ne, a p ersonal  digi t al assi stant wit h wireles scomm u n ica tions capa bility,a portabl e  comp u te r wit h w ireles scom munic ations cap abili ty, apa ger or  othe rpersonal  communications device. 
The B TS ma y c omprise o neo r m ore trans ceiv ers placed  at  asingl e l o catio n. T o ge the r  with  a b a se statio n  c ont r o ll er (BSC) th a t for ms pa rto f thebase  station terminat i ng the radio c ommu n i cat ion path  w ith the mobile  st at i o n, the B TS  is connect ed to an  a s socia ted mo bile s witchin g ce n ter (M SC).  Th e MSC isa s ys t em that  a ut o matica llypr ovides  switc h ingb e tween user traff ic fr o m  a wi r ele ss ne tw ork and a wi reline net work or oth er wir eles s net works.Abase s tat io n controll e r (BSC) w hichinterac ts  wit h t he MSC s an d the B TSspr ovi des a con t r ol an dm ana geme nt sy st em f or one or more BTS s.O n the r ev ers e commun i ca t i on link fr omthe m o b ile statio n  tot he BTS,access  and t rafficc han ne ls areuse d to transm it voicea ndco ntro l data.ACDMA  s yst em  digitally enco des voic e usingC o de-Exc ite d  Lin e ar Pre di ction (CELP) . Con se q uently, a  CE LP deco d erand  CE LP e nco dera re located at the BSC an d th e mob i lestati ons.En coders a n d
, and_typically are_used, to improve accuracy.
At_the GPS_receiver,_the satellite_signal_is demodulated after_it is matched_and synchronized with a_pseudo-random noise code._The_GPS receiver uses the GPS navigation message to calculate satellite signal transit times in_addition_to the_coordinates_of_the GPS satellite. Position measurement_by a GPS receiver can_typically be_accomplished within 15 meters (50 feet).
The GPS system_has_a variety of_uses with today's mobile communications systems, especially with those_employing code division multiple access (CDMA)._In CDMA systems_multiple_users_are allowed to simultaneously_use common data streams, called channels,_for transmission of information.
User information in_transmitted signals is distinguished by pseudo-random patterns_called codes. Transmitted information can be_recovered by a receiver so_long as_the pseudo-random patterns used by_the transmitter are_known by_the receiver. The_signal containing the information to be_transmitted is sent_at low power, and the bandwidth_of_the information contained_in_the_transmitted signal_is spread according_to_a code._Such_spread spectrum communications limit interference among_users_by making the transmitted signals appear similar_to random noise and_thereby_difficult to demodulate by_other than the intended receiver.
The_forward communication link from a base_transceiver station_(BTS) to_a mobile station uses the pilot, sync, paging and traffic communication_channels to transmit voice and control_data to the mobile_station. The_mobile_station may comprise,_for_example, a_mobile phone, a personal digital assistant with_wireless communications_capability, a portable computer with wireless_communications capability, a pager_or_other personal communications device.
The BTS may_comprise one or more transceivers placed_at a single location. Together_with_a_base station controller (BSC) that_forms part of the base station_terminating the radio_communication path with the mobile station, the_BTS_is connected to an associated mobile_switching_center (MSC). The MSC is a_system_that_automatically provides switching between user_traffic from a wireless network and_a wireline network or other wireless networks. A base_station controller (BSC)_which interacts with the MSCs_and_the_BTSs provides a control and management system for one or_more BTSs.
On_the reverse communication_link from the mobile station to the BTS, access and_traffic channels are used to transmit voice_and control data.
A CDMA system digitally encodes voice using Code-Excited Linear_Prediction (CELP). Consequently, a CELP decoder and CELP_encoder are located at the BSC and_the mobile stations.
Encoders and