비트율,bit_rate

Difference between r1.6 and the current

@@ -15,8 +15,9 @@
L=8 levels : 3 bits/signal

----
Compare: Shannon_capacity ( = channel_capacity ? chk )
이건 노이즈 있는 채널 (noisy_channel 에서)
Compare: Shannon_capacity ( = channel_capacity ? chk
WtEn:Shannon_capacity 에 따르면 syn. WtEn:Shannon_limit )
이건 노이즈[[noise]] 있는 채널 (noisy_channel 에서)
> ''C'' = ''B'' log,,2,,(1 + SNR)

( B = bandwidth, L = levels )
@@ -26,16 +27,21 @@
constant_bitrate CBR - https://ko.wikipedia.org/wiki/고정_비트레이트 https://en.wikipedia.org/wiki/Constant_bitrate
이 둘은 ,encoding 섹션에 CBR VBR 언급 추가. 나중에 거기서 여기로 복사해올것. 그리고
average_bitrate ABR
https://en.wikipedia.org/wiki/Average_bitrate
[[WpEn:Average_bitrate]] = https://en.wikipedia.org/wiki/Average_bitrate

Compare:
[[baud]]
https://mathworld.wolfram.com/Baud.html
WtEn:baud
WpSp:Baud ? WpEn:Baud ?
[[baud_rate]]
See "What’s The Difference Between Bit Rate And Baud Rate?" https://www.rpi.edu/dept/ecse/mps/Bit_%26_Baud_Rate.pdf
https://mathworld.wolfram.com/BaudRate.html
WtEn:baud_rate
WpSp:Baud_rate ? WpEn:Baud_rate ?
[[대역폭,bandwidth]]
[[throughput]]
WtEn:throughput
[[bit_error_rate]] BER
{
WpKo:비트_오류율
@@ -52,5 +58,4 @@
WpEn:Bit_rate = https://en.wikipedia.org/wiki/Bit_rate

Up: [[비트,bit]] [[비율,rate]]


비트레이트, 비트율

[edit]

Nyquist bit rate


noiseless_channel 의 Nyquist_bit_rate :
noiseless channel에서.
theoretical maximum bit rate. (비트율의 이론적 최대)

bit rate = 2 B log2L

여기서
$L$ : 레벨 수. $\log_2 L$ 은 비트 수. 예를 들어
L=2 levels : 1 bit/signal
L=8 levels : 3 bits/signal

Compare: Shannon_capacity ( = channel_capacity ? chk
WtEn:Shannon_capacity에 따르면 syn. WtEn:Shannon_limit )
이건 노이즈noise 있는 채널 (noisy_channel 에서)
C = B log2(1 + SNR)

( B = bandwidth, L = levels )

[edit]

2022-02-22