- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄368612 > S5N8950 (SAMSUNG SEMICONDUCTOR CO. LTD.) G.dmt ADSL Transceiver for CO and CPE PDF資料下載
參數(shù)資料
| 型號(hào)： | S5N8950 |
| 廠商： | SAMSUNG SEMICONDUCTOR CO. LTD. |
| 英文描述： | G.dmt ADSL Transceiver for CO and CPE |
| 中文描述： | G.dmt寬帶收發(fā)器對(duì)CO和CPE |
| 文件頁(yè)數(shù)： | 11/19頁(yè) |
| 文件大小： | 203K |
| 代理商： | S5N8950 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)當(dāng)前第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)第17頁(yè)第18頁(yè)第19頁(yè)
S5N8950
G.dmt ADSL Transceiver for CO and CPE
CONFIDENTIAL
Preliminary Information ( Rev 1.2 )
samples are fixed by the sync recovery algorithm using a known synchronization symbol. The TEQ is a
filter that adaptively alters the channel so that the impulse response is reduced to the length of the cyclic
prefix which will be removed prior to FFT. The FEQ is a one tap complex adaptive filter for each sub-
channel, which adjusts the gains and phases of the received signals. The equalizers are adaptively updated
due to the transmission channel environment.
In FDM-based DMT modulation, the frequency band, 0 to 1.104 MHz, is divided into 256 equi-spaced
sub-channels, of which 26 KHz (#6) to 134 KHz (#31) is allocated for the upstream, and 142 KHz (#33)
to 1.100 MHz (#255) for the downstream. The Nyquist rate, therefore, should be 2.208 MHz (276kHz).
DMT inherently transmits an optimized time-variable spectrum. This spectrum is adjusted according to
the desired data rate and the transmission characteristics (transfer function and noise spectrum) on each
and every sub-channel. For this, CO and CPE transmit 128.4 KHz wide tone downstream and upstream
respectively to each other during initialization. They measure the quality of each of these received tones
and then decided whether a tone has sufficient quality to be used for further transmission and, if so, how
much data this tone should carry relative to the other tones that are used. They inform the bit lo9ading
result to each other.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| S5N8951 | G.dmt ADSL Analog Front End IC |
| S5N8951X | G.dmt ADSL Analog Front End IC |
| S5N8952 | ADSL Transceiver for NIC |
| S5N8952X | ADSL Transceiver for NIC |
| S5T8610 | DIGITAL CLP MODEM WITH ADPCM CODEC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S5N8951 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8951X | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:G.dmt ADSL Analog Front End IC |
| S5N8952 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:ADSL Transceiver for NIC |
| S5N8952X | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:ADSL Transceiver for NIC |
| S5-P | 制造商:TURCK Inc 功能描述:Relay, Socket, Releco S5-P, 3 Pole, 11 Contact, PCB Mount, R4518 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。