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Code Division Multiple Access Question and Answers

July 1, 2022 By WatElectronics

This article lists 50 Code Division Multiple Access MCQs for engineering students. All the Code Division Multiple Access Questions & Answers given below include a hint and a link wherever possible to the relevant topic. This is helpful for users who are preparing for their exams, or interviews, or professionals who would like to brush up on the fundamentals of Code Division Multiple Access.

CDMA stands for Code division multiple access where signals occupy a single transmission channel. In which installation cost is very high and operating cost is low where capacity holding system is very large.

Where the data transmission rate is very high in which synchronization is not required because of high flexibility. Because of the spread-spectrum method, it is the most secure mode of communication. CDMA uses ADC conversion with spread spectrum technology.

As the number of users increases, the amount of noise also increases through which the system will collapse. The area covered by CDMA is large compared to TDMA. CDMA is more secure and robust and it can cover a large area, but when it comes to battery life is very less.

CDMA offers a transmission speed of only up to 14.4 kilobits per second in its single channel form and up to 115 Kbps in an eight-channel form. Wideband CDMA delivers data more times faster.

1). What is the full form of CDMA _____?

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2). CDMA is used in _____ communications?

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3). CDMA optimizes the available ____?

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4). In CDMA multiplexing, multiple channels occupy a _____ transmission channel?

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5). CDMA used in _____ satellite system for transportation logistics?

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6). CDMA is a ____ spectrum multiple access techniques?

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7). Data signal with pulse duration is represented by ___?

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8). Code signal with pulse duration is represented by ___?

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9). Bandwidth of the data signal is represented by _____?

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10). Bandwidth of the code signal is represented by _____?

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11). Pseudo-random code has a narrow ____ function?

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12) Bandwidth of the spread spectrum is much ____ than the bandwidth of the original signal?

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13). The ratio of Tb/Tc is called a _____ factor?

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14). CDMA can effectively reject ____ band interferenc?

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15). Narrow band interference can be easily removed using ___ filter without a loss of information?

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16). CDMA uses a __ receiver to stop multipath delay components to improve the performance of the system?

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17). Spreading sequences are used in ____ CDMA?

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18). Expand MAI full form _____?

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19). Compared with TDMA and FDMA, CDMA holds the ____ spectral efficiency?

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20). To recover lost data, interleaving and _____ encoding is used?

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21). Asynchronous CDMA holds some ____ because the spread signal is using pseudo-random code?

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Code Division Multiple Access MCQs for Exams

22). ____signals are also resistant to multipath fading?

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23). A _____ signal only has a finite amount of power available to jam the signal?

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24). ____ is the ability to reuse the same frequency channel at other cell sites in cellular systems?

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25). CDMA provides a high _____ signal?

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26). An enhanced CDMA version is also called ____?

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27). Processing gain formula, where W= spread rate, R=data rate then P(gain)= ______?

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28). On average, signal to noise ratio required is ____ for good quality of voice.

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29).Actual processing gain is formulated as ______?

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30). _____ is necessary for CDMA?

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Code Division Multiple Access Quiz Questions and Answers

31). Guard band and guard ____ are necessary for CDMA across channels?

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32). In CDMA, _____ is not required?

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33). Mode of data transfer in CDMA is ___ signal?

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34). CDMA is ___ flexible?

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35). For random code generation, the _____ operator is used?

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36). While compared with FDMA, the variable _____ rate is very easy?

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37). Full ____ efficiency is required in CDMA?

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38). In CDMA, installation cost is _____?

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39). In CDMA, operating cost is very ___?

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40). In CDMA, is the capacity of the system very _____?

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Code Division Multiple Access Interview Questions and Answers

41). CDMA is highly _____ to noise?

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42). CDMA carries out ___ handoff management?

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43). _____ pollution is the major issue present in the CDMA?

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44). CDMA offers a transmission speed of _____ in a single channel?

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45). CDMA offers a transmission speed of _____ in an eight-channel form?

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46).____ CDMA delivers the data many times faster?

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47). Multipath fading is ____ due to large signal bandwidth?

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48). CDMA channel is nominally ___ Mhz wide.

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49). CDMA offers a maximum download speed of __ Mbps?

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50). CDMA emits very less _____?

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