通信原理的经典讲义，日本东北大学安达幸信教授来华讲义

AN2120, Connecting an M68HC08 Family Microcontroller to an Internet Service Provider (ISP) Using the Point-to-Point Protocol (PPP).

通信史话-communications History INTEREST

汇编源代码,IIR滤波器-compilation of source code, IIR filter

sip_rfc3261 中国规定的SIP标准化文档-sip_rfc3261 China SIP standardization of documentation

palm的pocketc-palm of pocketc

SYMPCHUNK sets the number of symbols demodulated at once with a constant carrier frequency and symbol timing offset. This is a fundamental decoder parameter that establishes its carrier and symbol timing tracking bandwidth. Set it too low and the demodulator can"t accurately determine carrier frequency and symbol timing on a noisy signal. Set it too high and the demodulator may not be able to track large symbol rate offsets caused by Doppler shift and/or A/D or spacecraft clock errors. Or it might have trouble tracking high rates of change in the carrier frequency due to Doppler acceleration.The current value of SYMPCHUNK is 4*N1 = 512, where N1 = 128 is the order of the convolutional interleaver. 512 symbols is 512 milliseconds at 1000 symbols/sec, giving a frequency/time determination SNR that is 10*log10(512) = 27 dB greater than the Es/N0, not counti

Unix 到 Newton通讯的程序 -Communication between Unix and Newton

obdd的建立及其相关操作，是一个很好的软件包-obdd and its related operations, is a very good package

tracert,还用问吗.-tracert has used? Asked.

ISAG SP业务开发 包括短信 彩信 WAP等文档 对SP开发很有用-ISAG