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What Source Coding Techniques Are Used In Gsm And Is-95 Pdf

what source coding techniques are used in gsm and is-95 pdf

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Home Events Register Now About. While originally dedicated just to the rtl-sdr project, relevant legal content related to general SDR, RF and similar projects is also welcomed. TX output frequency: MHz 2. Along with each PlutoSDR firmware release we also provide the buildroot generated sysroot.

Introduction

Amplitude modulation b. Frequency modulation c. ASK d. Edwin Armstrong b. Albert Einstein c. Galileo Galilei d. David Bohm. Simplex mode b. Half duplex mode c. Full duplex mode d. None of the above. Digital European Cellular Telex b. Digitized Emergency Cellular Telephone c. Digital European Cordless Telephone d.

Digital European Cellular Telephone. Bellcore and Motorola c. Simplex systems b. Half duplex systems c. Full duplex systems d. Send numeric messages b. Send alphanumeric messages c. Voice message d. All of the above. Transmitter b. Receiver c. Transceiver d. Communication in single direction b. Communication in single direction at a time c. Communication in both directions at the same time d.

Mobile Identification Number b. Mobile Internet c. Mobility In Network d. Wireless concept of making calls b. For receiving calls c. Irrespective of the location of the user d. Pager b. Cordless c. Low earth orbit satellites d. Digital modulation formats d. TDMA b. CDMA c. Limited internet browsing b. Short Messaging Service c. Assigning different group of channels b.

Using transmitters with different power level c. Using different antennas d. Increase in radio spectrum b. It uses the maximum area for coverage b.

Fewer number of cells are required c. It approximates circular radiation pattern d. Sectored directional antennas b. Omni directional antennas c. Yagi uda antennas d. The traffic carried by whole network b. The traffic carried per cell divided by the bandwidth of the system and the area of a cell c. Both b and c e. Both a and c. Increased capacity b. Limited spectrum is required c. Same spectrum may be allocated to other network d. Fixed b. Dynamic c. Regular d. Both a and b e. Both b and c.

Gets transferred to another cell b. Gets blocked c. Is kept on waiting d. Each cell is assigned a predetermined set of frequencies b. The call is served by unused channels of the cell c. The call gets blocked if all the channels of the cell are occupied d.

Voice channels are not permanently assigned b. The serving base station requests for a channel from MSC c. MSC allocates the channel according to the predetermined algorithm d. Blocking is reduced b. Capacity of the system is increased c. More storage required b. Calculations and analysis is increased c. Process of transferring the call to the new base station b. Transfers the call c. New channel allocation is done d.

Week signal conditions b. High traffic conditions c. Un availability of the channel d. When mobile station moves in two cellular systems with different MSC b. When mobile station moves between two cellular systems c.

When mobile station receives more power from other base station than the serving base station d. Guard channel concept b. Fixed channel assignment c. Dynamic channel assignment d. Providing Guard channel b. Queuing of handoffs c. A call within the cell b. Hand off c. Waiting for channel allocation d. Interference b. Distance between the subscriber and the base station c.

Propagation of call d. The power received by the mobile station from other base station is more than the serving base station b.

Evolution of Positioning Techniques in Cellular Networks, from 2G to 4G

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what source coding techniques are used in gsm and is-95 pdf

Carrier bandwidth in GSM is kHz. – Carrier IS uses several techniques adapted from military Two short PN codes and a long PN code are used in IS-​95 Source: CDMA Systems Engineering Handbook, J. S. Lee and L. E. Miller.


Code-division multiple access

Code-division multiple access CDMA is a channel access method used by various radio communication technologies. CDMA is an example of multiple access , where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies see bandwidth.

Because of the installation cost of a communications channel, such as a microwave link or a coaxial cable link, it is desirable to share the channel among multiple users. Multiplexing is the sharing of a communications channel through local combining of signals at a common point. Two types of multiplexing are commonly employed: frequency-division multiplexing and time-division multiplexing.

Code-division multiple access CDMA is a channel access method used by various radio communication technologies. CDMA is an example of multiple access , where several transmitters can send information simultaneously over a single communication channel. This allows several users to share a band of frequencies see bandwidth. To permit this without undue interference between the users, CDMA employs spread spectrum technology and a special coding scheme where each transmitter is assigned a code.

Introduction

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