For CDMA, which is the weaker Link: FWD or Reverse? Why?
Answer Posted / tanuj
Reverse link is weak in CDMA because of use of PN Long codes compared to Walsh codes in the forward link. Since, walsh codes are perfectly orthogonal in nature there is less interference in the forward link. PN long codes on the other hand are non-orthogonal in nature. However, we cant use walsh codes for the reverse link as it may seem from the above as the best possible solution. This is because walsh codes are very small in number (64/128/512 max), and hence are not sufficient for identification of large number of users in the reverse link for which the PN long codes are employed.
Is This Answer Correct ? | 8 Yes | 2 No |
Post New Answer View All Answers
What is rake receiver?
Explain processing gain in cdma?
Please differentiate between cdma and fdma?
Explain sync channel?
Do you know what is the main difference between 1x rtt and 1x evdo?
Explain the effects of power control?
Please differentiate between cdma and tdma?
Do you know history of cdma?
What is walsh code?
How it is different from gsm?
How can cdma work?
Do you know what is cdma? Explain the technology?
How synchronization channel work in cdma?
Explain dect?
What is the difference between cohesion and coupling?