www.pudn.com > layer1.rar > m_sequence.h

/* 
******************************************************************************* 
* 
*      COPYRIGHT (C) 2000 BY ERICSSON EUROLAB DEUTSCHLAND GmbH 
*      90411 NUERNBERG, GERMANY, Tel Int + 49 911 5217 100 
* 
*      The program(s) may be used and/or copied only with the 
*      written permission from Ericsson or in accordance 
*      with the terms and conditions stipulated in the agreement or 
*      contract under which the program(s) have been supplied. 
* 
******************************************************************************* 
* 
*      File             : m_sequence.h 
*      Purpose          : Calculation of m-sequences  
*                         (maximum-length sequecnes or pseudo noise) 
* 
******************************************************************************* 
*/ 
 
#ifndef m_sequence_h 
#define m_sequence_h "$Id: $" 
 
/* 
******************************************************************************* 
*                         INCLUDE FILES 
******************************************************************************* 
*/ 
 
 
/* 
******************************************************************************* 
*                         DECLARATION OF PROTOTYPES 
******************************************************************************* 
*/ 
 
/* -------------------------------------------------------------------- */ 
/* function m_sequence()                                                */ 
/* *********************                                                */ 
/* Calculates one period of an m-sequence (binary pseudo noise).        */ 
/* The sequence is stored in the vector sequence, which must have a     */ 
/* of (2^r)-1, where r is an integer number between 2 and 10.           */ 
/* Therefore, with this release of m_sequence, sequences of length      */ 
/* 3, 7, 15, 31, 63, 127, 255, 511, or 1023 can be generated.           */ 
/* The resulting sequence is bipolar, i.e. it has values -1 and +1.     */ 
/* -------------------------------------------------------------------- */ 
 
void m_sequence(WORD16 *sequence, WORD16 length); 
 
 
#endif