產生頻率選擇性衰落的雷利通道,參數由天線結構、OFDM系統的結構與功率延時結構來決定。
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上傳時間: 2014-12-20
上傳用戶:lizhizheng88
GenDriver即簡單的資料流驅動程式,雖未跟硬體溝通,但匯出10個進入點,可被任何Windows CE系統所載入。為讓系統載入GenDriver可在系統啟動時,加入任何[HKEY_LOCAL_MACHINE]\Drivers\Builtin下的項目,讓驅動程式載入,或撰寫一個應用程式,在別處建立驅動程式機碥並呼叫ActivateDevice
上傳時間: 2016-06-24
上傳用戶:離殤
Trie樹既可用于一般的字典搜索,也可用于索引查找。對于給定的一個字符串a1,a2,a3,...,an.則采用TRIE樹搜索經過n次搜索即可完成一次查找。不過好像還是沒有B樹的搜索效率高,B樹搜索算法復雜度為logt(n+1/2).當t趨向大,搜索效率變得高效。怪不得DB2的訪問內存設置為虛擬內存的一個PAGE大小,而且幀切換頻率降低,無需經常的PAGE切換。
上傳時間: 2016-07-06
上傳用戶:sk5201314
執行步驟1: 執行EX1126程式進入學生考試系統 權限描述: 使用者查詢:於”姓名”中輸入”Arno”,於”學號”中輸入”good”,再按下”使用者查詢” 即可查詢. 修改使用者:於”姓名”中輸入”GUEST”,於”學號”中輸入”0000”,再按下” 修改使用者即可修改: 功能描述: 使用者開始考試,於”姓名”中輸入自己的姓名,於”學號”中輸入學號,再按下” 考試去”即可: 開始考試,同時系統紀錄考生狀態為”1”. 使用者考試,完成後按下”結算成績”,同時系統顯示紀錄考生該科分數,同時清除考生登入狀態,使其無法重覆考試,老師並可查詢考生成績.
上傳時間: 2016-07-31
上傳用戶:chens000
在通訊系統中常見到的cordic,是個用很少複雜度就能實現三角函數的電路,檔案中有C語言的CORDIC程式
上傳時間: 2017-03-07
上傳用戶:lepoke
C語言的開發模式, 是編寫.c的Source Code, 再經由Compiler編譯成Object Code。所謂Object Code指的是和硬體相關的機器指令, 也就是說當我們想要把C程式移植到不同的硬體時, 必須要重新Compile,以產生新的執行檔。除了需要重新編譯外,新系統是否具備應用程式所需的程式庫,include的檔案是否相容, 也是程式能否在新機器上順利編譯和執行的條件之一。
標簽: Code Object Compiler Source
上傳時間: 2017-04-02
上傳用戶:yph853211
在SamSung2440開發板上wince.net系統下,利用標準的imgdecmp.dll接口,實現了jpeg.bmp.gif.png等圖片的顯示,在armv4i環境下絕對可用
上傳時間: 2017-06-08
上傳用戶:JasonC
Kullanı lan bazı matlab bilgileri Matlabda kodlar mfile lara yazı lı p kaydedilebilir. Ü st menüden, file, new, mfile. Command windowa yazdı kları nı zı kaydedemezsiniz. Yazdı ğ ı nı z kodu ç alı ş tı rabilmeniz iç in ç alı ş tı ğ ı nı z current directory nin altı na kaydetmelisiniz. Current directory i dosyanı n bulunduğ u yere de gö türebilirsiniz
標簽: 305 bilgileri kaydedile Matlabda
上傳時間: 2014-01-06
上傳用戶:miaochun888
實驗源代碼 //Warshall.cpp #include<stdio.h> void warshall(int k,int n) { int i , j, t; int temp[20][20]; for(int a=0;a<k;a++) { printf("請輸入矩陣第%d 行元素:",a); for(int b=0;b<n;b++) { scanf ("%d",&temp[a][b]); } } for(i=0;i<k;i++){ for( j=0;j<k;j++){ if(temp[ j][i]==1) { for(t=0;t<n;t++) { temp[ j][t]=temp[i][t]||temp[ j][t]; } } } } printf("可傳遞閉包關系矩陣是:\n"); for(i=0;i<k;i++) { for( j=0;j<n;j++) { printf("%d", temp[i][ j]); } printf("\n"); } } void main() { printf("利用 Warshall 算法求二元關系的可傳遞閉包\n"); void warshall(int,int); int k , n; printf("請輸入矩陣的行數 i: "); scanf("%d",&k); 四川大學實驗報告 printf("請輸入矩陣的列數 j: "); scanf("%d",&n); warshall(k,n); }
上傳時間: 2016-06-27
上傳用戶:梁雪文以
#include <malloc.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #define NULL 0 #define MaxSize 30 typedef struct athletestruct /*運動員*/ { char name[20]; int score; /*分數*/ int range; /**/ int item; /*項目*/ }ATH; typedef struct schoolstruct /*學校*/ { int count; /*編號*/ int serial; /**/ int menscore; /*男選手分數*/ int womenscore; /*女選手分數*/ int totalscore; /*總分*/ ATH athlete[MaxSize]; /**/ struct schoolstruct *next; }SCH; int nsc,msp,wsp; int ntsp; int i,j; int overgame; int serial,range; int n; SCH *head,*pfirst,*psecond; int *phead=NULL,*pafirst=NULL,*pasecond=NULL; void create(); void input () { char answer; head = (SCH *)malloc(sizeof(SCH)); /**/ head->next = NULL; pfirst = head; answer = 'y'; while ( answer == 'y' ) { Is_Game_DoMain: printf("\nGET Top 5 when odd\nGET Top 3 when even"); printf("\n輸入運動項目序號 (x<=%d):",ntsp); scanf("%d",pafirst); overgame = *pafirst; if ( pafirst != phead ) { for ( pasecond = phead ; pasecond < pafirst ; pasecond ++ ) { if ( overgame == *pasecond ) { printf("\n這個項目已經存在請選擇其他的數字\n"); goto Is_Game_DoMain; } } } pafirst = pafirst + 1; if ( overgame > ntsp ) { printf("\n項目不存在"); printf("\n請重新輸入"); goto Is_Game_DoMain; } switch ( overgame%2 ) { case 0: n = 3;break; case 1: n = 5;break; } for ( i = 1 ; i <= n ; i++ ) { Is_Serial_DoMain: printf("\n輸入序號 of the NO.%d (0<x<=%d): ",i,nsc); scanf("%d",&serial); if ( serial > nsc ) { printf("\n超過學校數目,請重新輸入"); goto Is_Serial_DoMain; } if ( head->next == NULL ) { create(); } psecond = head->next ; while ( psecond != NULL ) { if ( psecond->serial == serial ) { pfirst = psecond; pfirst->count = pfirst->count + 1; goto Store_Data; } else { psecond = psecond->next; } } create(); Store_Data: pfirst->athlete[pfirst->count].item = overgame; pfirst->athlete[pfirst->count].range = i; pfirst->serial = serial; printf("Input name:) : "); scanf("%s",pfirst->athlete[pfirst->count].name); } printf("\n繼續輸入運動項目(y&n)?"); answer = getchar(); printf("\n"); } } void calculate() /**/ { pfirst = head->next; while ( pfirst->next != NULL ) { for (i=1;i<=pfirst->count;i++) { if ( pfirst->athlete[i].item % 2 == 0 ) { switch (pfirst->athlete[i].range) { case 1:pfirst->athlete[i].score = 5;break; case 2:pfirst->athlete[i].score = 3;break; case 3:pfirst->athlete[i].score = 2;break; } } else { switch (pfirst->athlete[i].range) { case 1:pfirst->athlete[i].score = 7;break; case 2:pfirst->athlete[i].score = 5;break; case 3:pfirst->athlete[i].score = 3;break; case 4:pfirst->athlete[i].score = 2;break; case 5:pfirst->athlete[i].score = 1;break; } } if ( pfirst->athlete[i].item <=msp ) { pfirst->menscore = pfirst->menscore + pfirst->athlete[i].score; } else { pfirst->womenscore = pfirst->womenscore + pfirst->athlete[i].score; } } pfirst->totalscore = pfirst->menscore + pfirst->womenscore; pfirst = pfirst->next; } } void output() { pfirst = head->next; psecond = head->next; while ( pfirst->next != NULL ) { // clrscr(); printf("\n第%d號學校的結果成績:",pfirst->serial); printf("\n\n項目的數目\t學校的名字\t分數"); for (i=1;i<=ntsp;i++) { for (j=1;j<=pfirst->count;j++) { if ( pfirst->athlete[j].item == i ) { printf("\n %d\t\t\t\t\t\t%s\n %d",i,pfirst->athlete[j].name,pfirst->athlete[j].score);break; } } } printf("\n\n\n\t\t\t\t\t\t按任意建 進入下一頁"); getchar(); pfirst = pfirst->next; } // clrscr(); printf("\n運動會結果:\n\n學校編號\t男運動員成績\t女運動員成績\t總分"); pfirst = head->next; while ( pfirst->next != NULL ) { printf("\n %d\t\t %d\t\t %d\t\t %d",pfirst->serial,pfirst->menscore,pfirst->womenscore,pfirst->totalscore); pfirst = pfirst->next; } printf("\n\n\n\t\t\t\t\t\t\t按任意建結束"); getchar(); } void create() { pfirst = (struct schoolstruct *)malloc(sizeof(struct schoolstruct)); pfirst->next = head->next ; head->next = pfirst ; pfirst->count = 1; pfirst->menscore = 0; pfirst->womenscore = 0; pfirst->totalscore = 0; } void Save() {FILE *fp; if((fp = fopen("school.dat","wb"))==NULL) {printf("can't open school.dat\n"); fclose(fp); return; } fwrite(pfirst,sizeof(SCH),10,fp); fclose(fp); printf("文件已經成功保存\n"); } void main() { system("cls"); printf("\n\t\t\t 運動會分數統計\n"); printf("輸入學校數目 (x>= 5):"); scanf("%d",&nsc); printf("輸入男選手的項目(x<=20):"); scanf("%d",&msp); printf("輸入女選手項目(<=20):"); scanf("%d",&wsp); ntsp = msp + wsp; phead = (int *)calloc(ntsp,sizeof(int)); pafirst = phead; pasecond = phead; input(); calculate(); output(); Save(); }
標簽: 源代碼
上傳時間: 2016-12-28
上傳用戶:150501