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a-Channel-Modeling-<b>SUB</b>committee-R

  • Carrier-phase synchronization can be approached in a general manner by estimating the multiplicativ

    Carrier-phase synchronization can be approached in a general manner by estimating the multiplicative distortion (MD) to which a baseband received signal in an RF or coherent optical transmission system is subjected. This paper presents a unified modeling and estimation of the MD in finite-alphabet digital communication systems. A simple form of MD is the camer phase exp GO) which has to be estimated and compensated for in a coherent receiver. A more general case with fading must, however, allow for amplitude as well as phase variations of the MD. We assume a state-variable model for the MD and generally obtain a nonlinear estimation problem with additional randomly-varying system parameters such as received signal power, frequency offset, and Doppler spread. An extended Kalman filter is then applied as a near-optimal solution to the adaptive MD and channel parameter estimation problem. Examples are given to show the use and some advantages of this scheme.

    標簽: synchronization Carrier-phase multiplicativ approached

    上傳時間: 2013-11-28

    上傳用戶:windwolf2000

  • We have a group of N items (represented by integers from 1 to N), and we know that there is some tot

    We have a group of N items (represented by integers from 1 to N), and we know that there is some total order defined for these items. You may assume that no two elements will be equal (for all a, b: a<b or b<a). However, it is expensive to compare two items. Your task is to make a number of comparisons, and then output the sorted order. The cost of determining if a < b is given by the bth integer of element a of costs (space delimited), which is the same as the ath integer of element b. Naturally, you will be judged on the total cost of the comparisons you make before outputting the sorted order. If your order is incorrect, you will receive a 0. Otherwise, your score will be opt/cost, where opt is the best cost anyone has achieved and cost is the total cost of the comparisons you make (so your score for a test case will be between 0 and 1). Your score for the problem will simply be the sum of your scores for the individual test cases.

    標簽: represented integers group items

    上傳時間: 2016-01-17

    上傳用戶:jeffery

  • 1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a

    1) Write a function reverse(A) which takes a matrix A of arbitrary dimensions as input and returns a matrix B consisting of the columns of A in reverse order. Thus for example, if A = 1 2 3 then B = 3 2 1 4 5 6 6 5 4 7 8 9 9 8 7 Write a main program to call reverse(A) for the matrix A = magic(5). Print to the screen both A and reverse(A). 2) Write a program which accepts an input k from the keyboard, and which prints out the smallest fibonacci number that is at least as large as k. The program should also print out its position in the fibonacci sequence. Here is a sample of input and output: Enter k>0: 100 144 is the smallest fibonacci number greater than or equal to 100. It is the 12th fibonacci number.

    標簽: dimensions arbitrary function reverse

    上傳時間: 2016-04-16

    上傳用戶:waitingfy

  • The LM628/LM629 are dedicated motion-control processors designed for use with a variety of DC and b

    The LM628/LM629 are dedicated motion-control processors designed for use with a variety of DC and brushless DC servo motors

    標簽: motion-control processors dedicated designed

    上傳時間: 2014-01-23

    上傳用戶:aa17807091

  • 1. 通過8255A并口來控制LED發(fā)光二極管的亮滅。 2. A口控制紅燈

    1. 通過8255A并口來控制LED發(fā)光二極管的亮滅。 2. A口控制紅燈,B口控制黃燈,C口控制綠燈。 3. 輸出為0則亮,輸出為1則滅。 4. 用8253定時來控制變換時間 。

    標簽: 8255A LED 控制 并口

    上傳時間: 2013-12-06

    上傳用戶:cccole0605

  • 【問題描述】 在一個N*N的點陣中

    【問題描述】 在一個N*N的點陣中,如N=4,你現(xiàn)在站在(1,1),出口在(4,4)。你可以通過上、下、左、右四種移動方法,在迷宮內(nèi)行走,但是同一個位置不可以訪問兩次,亦不可以越界。表格最上面的一行加黑數(shù)字A[1..4]分別表示迷宮第I列中需要訪問并僅可以訪問的格子數(shù)。右邊一行加下劃線數(shù)字B[1..4]則表示迷宮第I行需要訪問并僅可以訪問的格子數(shù)。如圖中帶括號紅色數(shù)字就是一條符合條件的路線。 給定N,A[1..N] B[1..N]。輸出一條符合條件的路線,若無解,輸出NO ANSWER。(使用U,D,L,R分別表示上、下、左、右。) 2 2 1 2 (4,4) 1 (2,3) (3,3) (4,3) 3 (1,2) (2,2) 2 (1,1) 1 【輸入格式】 第一行是數(shù)m (n < 6 )。第二行有n個數(shù),表示a[1]..a[n]。第三行有n個數(shù),表示b[1]..b[n]。 【輸出格式】 僅有一行。若有解則輸出一條可行路線,否則輸出“NO ANSWER”。

    標簽: 點陣

    上傳時間: 2014-06-21

    上傳用戶:llandlu

  • 該程序?qū)崿F(xiàn)兩個機器人在一個二維網(wǎng)格中的自動追捕。通過方向鍵手動控制機器人A走步

    該程序?qū)崿F(xiàn)兩個機器人在一個二維網(wǎng)格中的自動追捕。通過方向鍵手動控制機器人A走步,機器人B根據(jù)設(shè)定的追捕或逃避方式自動對機器人A進行追捕或逃避。

    標簽: 機器人 程序 二維 方向

    上傳時間: 2017-08-31

    上傳用戶:pkkkkp

  • 利用棧的基本操作實現(xiàn)將任意一個十進制整數(shù)N轉(zhuǎn)化為R進制整數(shù)。

    #include <stdlib.h> #include<stdio.h> #include <malloc.h> #define stack_init_size 100 #define stackincrement 10 typedef struct sqstack { int *base; int *top; int stacksize; } sqstack; int StackInit(sqstack *s) { s->base=(int *)malloc(stack_init_size *sizeof(int)); if(!s->base) return 0; s->top=s->base; s->stacksize=stack_init_size; return 1; } int Push(sqstack *s,int e) { if(s->top-s->base>=s->stacksize) { s->base=(int *)realloc(s->base,(s->stacksize+stackincrement)*sizeof(int)); if(!s->base) return 0; s->top=s->base+s->stacksize; s->stacksize+=stackincrement; } *(s->top++)=e; return e; } int Pop(sqstack *s,int e) { if(s->top==s->base) return 0; e=*--s->top; return e; } int stackempty(sqstack *s) { if(s->top==s->base) { return 1; } else { return 0; } } int conversion(sqstack *s) { int n,e=0,flag=0; printf("輸入要轉(zhuǎn)化的十進制數(shù):\n"); scanf("%d",&n); printf("要轉(zhuǎn)化為多少進制:\n"); scanf("%d",&flag); printf("將十進制數(shù)%d 轉(zhuǎn)化為%d 進制是:\n",n,flag); while(n) { Push(s,n%flag); n=n/flag; } while(!stackempty(s)) { e=Pop(s,e); switch(e) { case 10: printf("A"); break; case 11: printf("B"); break; case 12: printf("C"); break; case 13: printf("D"); break; case 14: printf("E"); break; case 15: printf("F"); break; default: printf("%d",e); } } printf("\n"); return 0; } int main() { sqstack s; StackInit(&s); conversion(&s); return 0;                        }

    標簽: 整數(shù) 基本操作 十進制 轉(zhuǎn)化 進制

    上傳時間: 2016-12-08

    上傳用戶:愛你198

  • 道理特分解法

    #include "iostream" using namespace std; class Matrix { private: double** A; //矩陣A double *b; //向量b public: int size; Matrix(int ); ~Matrix(); friend double* Dooli(Matrix& ); void Input(); void Disp(); }; Matrix::Matrix(int x) { size=x; //為向量b分配空間并初始化為0 b=new double [x]; for(int j=0;j<x;j++) b[j]=0; //為向量A分配空間并初始化為0 A=new double* [x]; for(int i=0;i<x;i++) A[i]=new double [x]; for(int m=0;m<x;m++) for(int n=0;n<x;n++) A[m][n]=0; } Matrix::~Matrix() { cout<<"正在析構(gòu)中~~~~"<<endl; delete b; for(int i=0;i<size;i++) delete A[i]; delete A; } void Matrix::Disp() { for(int i=0;i<size;i++) { for(int j=0;j<size;j++) cout<<A[i][j]<<" "; cout<<endl; } } void Matrix::Input() { cout<<"請輸入A:"<<endl; for(int i=0;i<size;i++) for(int j=0;j<size;j++){ cout<<"第"<<i+1<<"行"<<"第"<<j+1<<"列:"<<endl; cin>>A[i][j]; } cout<<"請輸入b:"<<endl; for(int j=0;j<size;j++){ cout<<"第"<<j+1<<"個:"<<endl; cin>>b[j]; } } double* Dooli(Matrix& A) { double *Xn=new double [A.size]; Matrix L(A.size),U(A.size); //分別求得U,L的第一行與第一列 for(int i=0;i<A.size;i++) U.A[0][i]=A.A[0][i]; for(int j=1;j<A.size;j++) L.A[j][0]=A.A[j][0]/U.A[0][0]; //分別求得U,L的第r行,第r列 double temp1=0,temp2=0; for(int r=1;r<A.size;r++){ //U for(int i=r;i<A.size;i++){ for(int k=0;k<r-1;k++) temp1=temp1+L.A[r][k]*U.A[k][i]; U.A[r][i]=A.A[r][i]-temp1; } //L for(int i=r+1;i<A.size;i++){ for(int k=0;k<r-1;k++) temp2=temp2+L.A[i][k]*U.A[k][r]; L.A[i][r]=(A.A[i][r]-temp2)/U.A[r][r]; } } cout<<"計算U得:"<<endl; U.Disp(); cout<<"計算L的:"<<endl; L.Disp(); double *Y=new double [A.size]; Y[0]=A.b[0]; for(int i=1;i<A.size;i++ ){ double temp3=0; for(int k=0;k<i-1;k++) temp3=temp3+L.A[i][k]*Y[k]; Y[i]=A.b[i]-temp3; } Xn[A.size-1]=Y[A.size-1]/U.A[A.size-1][A.size-1]; for(int i=A.size-1;i>=0;i--){ double temp4=0; for(int k=i+1;k<A.size;k++) temp4=temp4+U.A[i][k]*Xn[k]; Xn[i]=(Y[i]-temp4)/U.A[i][i]; } return Xn; } int main() { Matrix B(4); B.Input(); double *X; X=Dooli(B); cout<<"~~~~解得:"<<endl; for(int i=0;i<B.size;i++) cout<<"X["<<i<<"]:"<<X[i]<<" "; cout<<endl<<"呵呵呵呵呵"; return 0; } 

    標簽: 道理特分解法

    上傳時間: 2018-05-20

    上傳用戶:Aa123456789

  • java實現(xiàn)大整數(shù)運算

    在包 hugeinteger 中創(chuàng)建功能類 HugeInteger,該類用來存放和操作一個不超過 40 位的大整數(shù)。 (1) 定義一個構(gòu)造函數(shù),用來對大整數(shù)進行初始化。參數(shù)為一個字符串。 (2) 定義 input 成員函數(shù),實現(xiàn)大整數(shù)的重新賦值。參數(shù)為一個字符串,無返回 值。 (3) 定義 output 成員函數(shù),將大整數(shù)輸出到屏幕上。無參數(shù)無返回值。 (4) 定義 add 成員函數(shù),實現(xiàn)兩個大整數(shù)的加法。參數(shù)為一個 HugeInteger 對 象,無返回值,例如: HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); A.add(B); 此時,A 為 13579,B 為 1234。 (5) 定義 sub 成員函數(shù),實現(xiàn)兩個大整數(shù)的減法。參數(shù)和返回值同 add 函數(shù)。 (6) 定義若干大整數(shù)關(guān)系運算的成員函數(shù),包括 isEqualTo(等于,=)、 isNotEqualTo(不等于,≠)、isGreaterThan(大于,>)、isLessThan(小 于,<)、isGreaterThanOrEqualTo(大于等于,≥)和 isLessThanOrEqualTo (小于等于,≤)。這些函數(shù)的參數(shù)為一個 HugeInteger 對象,返回值為一個 布爾類型,表示關(guān)系運算的結(jié)果,例如: HugeInteger A = new HugeInteger("12345"); HugeInteger B = new HugeInteger("1234"); 那么此時 A.isGreaterThan(B)的結(jié)果應(yīng)當為 True,表示 12345>1234。

    標簽: java 整數(shù) 運算

    上傳時間: 2019-06-01

    上傳用戶:idealist

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