What is CDMA capacity? – Enpatika
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What is CDMA capacity?

Why is CDMA needed?

1 April 2022 Enpatika.com Genel

CDMA optimizes the use of available bandwidth as it transmits over the entire frequency range and does not limit the user’s frequency range . It is used as the access method in many mobile phone standards.

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Why CDMA Cannot be used for higher bit rates?

1 April 2022 Enpatika.com Genel

CDMA has a soft capacity. The greater the number of codes, the more number of users. However, many codes are used S/I drops and the BER (Bit Error Rate) will increase for all users. CDMA requires a tight power control as it suffers from near-far effect .

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What are the design features of CDMA?

1 April 2022 Enpatika.com Genel

CDMA in cellular systems offers attractive features such as the potential for high spectrum efficiency, soft capacity, soft handover and macro-diversity . This has been claimed and demonstrated in various system design studies, analyses and trials.

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How do you represent data in CDMA?

1 April 2022 Enpatika.com Genel

CDMA is a spread spectrum technique. Each data bit is spread by a code sequence . This means, energy per bit is also increased.

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What is the duration of WCDMA frame?

1 April 2022 Enpatika.com Genel

radio frame structure of WCDMA is shown in Figure 1 [15]. Frame structure has an overall length of 10 ms , comprising 15 time-slots. …

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What is voice activity factor in CDMA?

1 April 2022 Enpatika.com Genel

The Voice Activity Factor of 0.4 is considered = -4dB . CDMA has 100% frequency reuse. Use of same frequency in surrounding cells causes some additional interference.

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What is CDMA capacity?

1 April 2022 Enpatika.com Genel

CDMA allows up to 61 concurrent users in a 1.2288 MHz channel by processing each voice packet with two PN codes.

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