This is a combination of analog-to-digital conversion and spread spectrum technology. CDM may be defined as a form of multiplexing where the transmitter encodes the signal using a pseudo-random sequence. CDM involves the original digital signal with a spreading code. This spreading has the ...
A method and system are provided for the synchronous transmission and reception of multiplexed digital signals such as spread spectrum. The system uses biorthogonal modulation of a plurality of orthogonal signals, preferably wideband, together with simultaneous orthogonal multiplexing. The method is found ...
An orthogonal wavelet division multiplexing (OWDM) communication system including a synthesis section and a channel interface. The synthesis section includes a filter pair bank with multiple inputs an
Spread spectrum wireless communication system Spread-spectrum communication may also be used in conjunction with CDMA, FDMA, TDMA, and other multiplexing techniques, and thus may offer advantages in a switching network. [0008] One method of public access to telephone networks is... JS Vanderpool 被...
Spread spectrum communication techniques for a code division message multiplexing systemOF THE DISCLOSUREA transmission system is described, suitable for transmitting\nmultiple messages over a single carrier. At the transmitter, a message-\nmodulated carrier is given an additional modulation by an ...
英['mʌltɪpleksɪŋ] 美['mʌltɪpleksɪŋ] 是什么意思 n. 复用;倍增,倍加; 英英释义 multiplex[ 'mʌltipleksiŋ ] n.communicates two or more signals over a common channel adj. many and varied; having many features or forms ...
The term CDM stands for code division multiplexing. It is one kind of technology that works with spread spectrum communication. In this type of communication, a narrowband signal can be transmitted through division across several channels or over a larger frequency band. ...
Bandwidth Utilization Multiplexing and Spreading:带宽利用复用和扩展使用,帮助,and,复用和 文档格式: .ppt 文档大小: 1.52M 文档页数: 58页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 金融/证券--财经资料 文档标签: 使用帮助and复用和 ...
Spread spectrum arrangement for (de)multiplexing speech signals and nonspeech signals It is known to multiplex speech signals and nonspeech signals over a common communication path. One arrangement uses a portion of the frequency spectrum of the path for speech signals with the remainder for non...
Transmit data is transmitted by an OFDM signal through an OFDM scheme, pilot data is directly spread, and a spread-spectrum signal, ... HASEGAWA Tsuyoshi,c/o FUJITSU LIMITED,SHIMIZU Masahiko,... 被引量: 4发表: 2008年 RADIO BASE APPARATUS, TRANSMISSION POWER CONTROL METHOD, AND TRANSMISSION ...