Howtosignalprocessing
- What are the two main effects of the wireless channel?
- What are the most important characteristics of wireless channel?
- What is wireless channel estimation?
- How is wireless channel capacity calculated?
What are the two main effects of the wireless channel?
There are two main types of signal degradation introduced by wireless channels: the first is attenuation and random variation of signal amplitude, and the second is distortion of the signal spectrum.
What are the most important characteristics of wireless channel?
The wireless channel is susceptible to a variety of transmission impediments such as path loss, interference and blockage. These factors restrict the range, data rate, and the reliability of the wireless transmission.
What is wireless channel estimation?
The channel estimation algorithm extracts the reference signals for a transmit/receive antenna pair from the received grid. The least squares estimates of the channel frequency response at the pilot symbols are calculated as described in On Channel Estimation in OFDM Systems [2].
How is wireless channel capacity calculated?
Capacity is a channel characteristic - not dependent on transmission or reception tech- niques or limitation. In AWGN, C = B log2(1 +γ) bps, where B is the signal bandwdith and γ = P/(N0B) is the received signal-to-noise power ratio.
