DSP-based Soft Implementation of Fax Modem V.29 基于DSP的传真调制解调标准V.29的全数字实现方案
Realizes the continuous phase BFSK soft modulate procedure based on the V.21 modem recommendation, and proposes a valid orthogonal structure detecting algorithm to determine the start time of a code, and a BFSK signal demodulating algorithm based on CZT spectrum analysis. 基于V.21调制解调器,实现相位连续的BFSK软调制过程;分析各种BFSK信号解调算法,提出一种有效的正交结构码元起始位置判决算法和一种基于CZT谱分析的BFSK信号解调算法。
The ground treatment technology of soft soil is long-standing, with the progress and developing constantly of modem en - gineering, the method dealt with in soft soil ground is varied. 软土地基处理技术由来己久,随着现代工程技桩的进步和不断发展,软土地基处理的方法多种多样。
This paper analyzes the present state of interior soft environment design and its meaning and contents to narrate the contents and principles of modem interior decorative fabrics design. 本文通过对室内软环境设计现状、设计含义与内容的分析,论述了现代室内装饰织物设计的内容与原则。