... Tradeoff in the Reverse Link”, CDMA Development Group Web Site: http://www.cdg.org/technology /cdma_ technology/a_ross/CovCap.asp.[12] Salkola, M. I. (2002). CDMA Capacity – Can You Supersize ... Cellular CDMA Systems”, IEEE Transactions on Vehicular Technology, Vol. 48, No. 5, September 1999. [15] Yang, Samuel C. (1998). CDMA RF System Engineering. Artech HouseWHITE PAPER CDMA Capacity ... depiction of CDMA coverage vs. capacity is shown to be a useful tool in evaluating the performance of a CDMA system. The graphical results are used to show scenarios in which CDMA can be both...
... 3 CDMA2 000 Khi máy di động gửi gói dữ liệu. Để truyền dữ liệu với tốc độ cao,BS hay MS sẽ gửi tín hiệu yêu cầu kênhbổ sung.49Hệ thống thông tin di động thế hệ 3 CDMA2 000Hình 5: Gói dữ liệu ... gửi gói dữ liệu đúng cho MS.18Hệ thống thông tin di động thế hệ 3 CDMA2 000 ARQ sublayerCó các cơ chế phát hiện lỗi,và truyền lại khi dữ liệu bị lỗi.Do đó đảm bảoviệc phân phát dữ liệu xảy ... động thế hệ 3 CDMA2 000Các kênh xuôi trong CDMA2 000 chia làm kênh báo hiệu và kênh ngườidùng.Kênh báo hiệu mang thông tin điều khiển.Kênh người dùng mang dữ liệu. Kênh xuôi trong CDMA2 000Kênh...
... MHz cdmaOne carrier. Dual mode cdmaOne/AMPSmobile stations (MSs) are able to use the cdmaOne system, where available, and they willrevert to the AMPS system in areas where there is no CDMA ... States,the cdmaOne technology was modified to operate in the 1900 MHz PCS frequency bandin a single mode configuration citecdma-pcs. This version of the cdmaOne technology wascommonly referred to as CDMA- PCS’ ... States.Qualcomm’s CDMA technology was ‘re-branded’ as cdmaOne in 1997. Prior to thisthe technology was commonly referred to as ‘IS-95’, which is the name of the standardwhich describes the cdmaOne technology...
... (Multicarrier). This system is the 3G version of IS-95 (now calledcdmaOne), and is also known as cdma2 000. We will use the term cdma2 000 as thisis its widely used name.IMT TC (Time Code). This ... available. CDMA entered the cellular world with a host oftechnical problems, not made easier as the transceivers from day one had to be dual-modewith AMPS. Its advocates were clear in that CDMA has ... systemswhich will need to migrate to 3G CDMA ones. However, as we will show in Section 6.2,GSM with its TDMA is able to evolve closely to 3G without picking up the CDMA card.Nevertheless there is...
... is cdma2 000. Based upon the direct sequence spreadspectrum technology, cdma2 000 works in the FDD mode,operates with one or more carriers, and is backwards compatiblewith the 2G system cdmaOne.The ... different access technologies (that is, IS-95-based CDMA, IS-136 TDMA, GSM, TDMA for Digital EuropeanCordless Telephone [DECT] and wideband CDMA [W -CDMA] ). Thestandards developed for PCS in North ... con-trol data. The bandwidth of each channel allocated to an individual23IntroductionW -CDMA (UTRA) cdma2 000Multiple Access FDD, TDD FDDModeSpectrum FDD mode 1850—1910 MHz uplinkAllocation...
... MHz cdmaOne carrier. Dual mode cdmaOne/AMPSmobile stations (MSs) are able to use the cdmaOne system, where available, and they willrevert to the AMPS system in areas where there is no CDMA ... States,the cdmaOne technology was modified to operate in the 1900 MHz PCS frequency bandin a single mode configuration citecdma-pcs. This version of the cdmaOne technology wascommonly referred to as CDMA- PCS’ ... single CDMA carrier. In situations wherethe allocated spectrum supports more than one cdmaOne carrier, the network operator canincrease the system capacity by installing more than one CDMA carrier...
... 103,i.e.po=Pr(BER>103)=PrEbI0im=S0I0int+η<γreq290CHAPTER 5. ANALYSIS OF IS-955.3 CDMA in a Single MacrocellConsider a single cell CDMA communication system using binary phase shift keying (BPSK)spread ... needfor an accurate power control technique for the up-link in this type of CDMA system.5.3.2 The down-link systemThe CDMA down-link, namely the forward link, has a coherent BPSK communication ... shown in the systemarrangement of Figure 5.8, the BS transmitter adds the CDMA signals from the N1trafficchannels with a CDMA pilot, then transmits this combined signal to all the mobile users...