tdma和fdma

1)FDMA (1) FDMA)

FDMA (Frequency-Division Multiple Access) is a channelization process based on frequency division for multiple access. In frequency-division multiple access (FDMA), the available bandwidth is divided into frequency bands. Each station is allocated a channel bandwidth to send its data. Specifically speaking, each band of the link is reserved for a specific station, and it belongs to the station for all the time period.

FDMA(频分多址)是基于频分的用于多址的信道化过程。 在频分多址(FDMA)中 ，可用带宽被划分为多个频带。 每个站都分配有一个信道带宽来发送其数据。 具体地说，链路的每个频带都为特定的站点保留，并且在整个时间段内都属于该站点。

Each station uses a bandpass filter to confine the transmitter frequencies within the specified band assigned to it. To prevent station interferences between stations, the allocated bands are separated from each another by small guard bands.

每个电台使用一个带通滤波器将发射机频率限制在分配给它的指定频段内。 为了防止站点之间的站点干扰，分配的频带之间要用小的保护频带分开。

2)TDMA (2) TDMA)

TDMA (Time-Division Multiple Access) is a channelization process based on time-slot division for multiple access. In time-division multiple access (TDMA), the stations share the total bandwidth of the channel in time beings. Each station is allocated a time slot during which it can send data using the whole bandwidth. Each station transmits its data in its assigned time slot only.

TDMA(时分多址)是一种基于时隙划分的多路访问信道化过程。 在时分多址(TDMA)中 ，站点按时共享信道的总带宽。 每个站都分配了一个时隙，在此期间它可以使用整个带宽发送数据。 每个站仅在其分配的时隙中传输其数据。

But the main problem with TDMA is synchronization between different stations.

但是TDMA的主要问题是不同站之间的同步。

Another channelization process is Code-Division Multiple Access (CDMA) | Computer Networks

另一个信道化过程是码分多址(CDMA)| 计算机网络

Reference: Question: Explain the Taxonomy of multiple access protocols

参考： 问题：解释多路访问协议的分类法

翻译自: https://www.includehelp.com/computer-networks/fdma-and-tdma-channelization-processes.aspx

tdma和fdma