COMPUTER NETWORKING

WIRELESS NETWORKS AND MOBILE IP

WIRELESS NETWORKS

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

Which property of OFDMA system allows adjacent subcarriers to be used without interference?

A	Orthogonality
B	Orthodoxy
C	Octagonality
D	Originality

Explanation:

Detailed explanation-1: -Which property of OFDMA system allows adjacent subcarriers to be used without interference? Explanation: Orthogonality of sub-carriers simply means their correlation is zero. Orthogonality in OFDMA system allows adjacent subcarriers to be used without interference.

Detailed explanation-2: -In OFDM, several bits can be sent in parallel, or at the same time, in separate substream channels. This enables each substream’s data rate to be lower than would be required by a single stream of similar bandwidth. This makes the system less susceptible to interference and enables more efficient data bandwidth.

Detailed explanation-3: -The subcarriers are spaced from one another by an amount that makes them orthogonal to one another. This means that despite their close adjacent spacing from one another they will not interfere with one another. Figure 63.7 shows the spectrum of an OFDM signal.

There is 1 question to complete.