Hello From wiki''There are a fixed number of orthogonal codes,

In summary, the conversation discusses the concept of bursty nature in telecommunications and how it affects the utilization of codes, timeslots, and frequency bands. The bursty nature refers to the varying levels of transmission in a system, which can result in underutilization of resources. This is similar to the example of a CD/DVD with a radial scratch, where the damage is "bursty" and can be addressed using error correction techniques such as Reed-Solomon.
  • #1
sajib333
15
0
hello

From wiki..
''There are a fixed number of orthogonal codes, timeslots or frequency bands that can be allocated for CDM (Sync CDMA), TDMA, and FDMA systems, which remain underutilized (to fail to utilize fully) due to the bursty nature of telephony and packetized data transmissions. ''

My question is what does the bursty nature of telephony mean actually? So far I understnad - bursty nature means sometime very high number of transmission (i.e. phone calls) while other time it might be very low number of transmission? And when the number of calls are very low, the codes/time slots/ frequency bands are unused, hence underutilized.

Is it right what I understand?

Thanks
 
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  • #2


The typical example is a CD/DVD with a radial scratch. The damage done (noise created) is "bursty" because it is constrained to a cluster in time/space. This is why Reed-Solomon is used for error correction - it's good for bursty noise.
 

FAQ: Hello From wiki''There are a fixed number of orthogonal codes,

What is the significance of orthogonal codes in "Hello From wiki"?

Orthogonal codes are a set of unique sequences that are used in various communication systems. They are important in "Hello From wiki" because they allow multiple users to transmit data simultaneously without interference, thus increasing the efficiency and reliability of the system.

How are orthogonal codes generated?

Orthogonal codes are typically generated using mathematical algorithms and techniques such as Walsh-Hadamard transforms, Golay codes, and Kasami sequences. These methods ensure that the codes have desirable properties such as orthogonality and low autocorrelation.

Can orthogonal codes be used in any type of communication system?

Yes, orthogonal codes can be used in various communication systems such as wireless networks, satellite communications, and spread spectrum systems. They are especially useful in systems that require multiple users to transmit data simultaneously.

How do orthogonal codes prevent interference in communication systems?

Orthogonal codes have the property of orthogonality, which means that they have zero correlation with each other. This ensures that signals transmitted using different orthogonal codes do not interfere with each other, allowing multiple users to transmit data simultaneously without interference.

Are there any limitations to the use of orthogonal codes in "Hello From wiki"?

One limitation of orthogonal codes is that their performance can be affected by factors such as multipath fading and noise. Additionally, the number of orthogonal codes available is limited, which can be a constraint in systems with a large number of users.

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