Explain Long PN Code?
swathi 26-May-2008 04:49:44 AM
Comments


The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.
Posted by jahangir1983


The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.
Posted by jahangir1983


The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.
Posted by jahangir1983


It is of of period 242-1 chips at a chipping rate of 1.2288 Mchips/sec.
Posted by waqqas1


It is used in CDMA 2000 also and its value is 32768and uses chipping rate 1.2288Mcps
Posted by HamidAliKhan


This code on the reverse link is used for spreading meaning identifying the mobile station. It is 42-bit code. On the forward link it is used for data scrambling.
Note:
Let’s discuss from now on IS-95A and IS-95B and take the delta portion covering CDMA-2000 later. Understanding will be clearer since it is an evolutionary standard from IS-95Ato CDMA-2000.
Posted by ravi_195


Definition: The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.
Posted by sagitraz


Posted: 26-May-2008 09:26:38 AM By: sagitraz

Definition: The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.

Posted: 27-May-2008 10:28:34 AM By: ravi_195

This code on the reverse link is used for spreading meaning identifying the mobile station. It is 42-bit code. On the forward link it is used for data scrambling.
Note:
Let’s discuss from now on IS-95A and IS-95B and take the delta portion covering CDMA-2000 later. Understanding will be clearer since it is an evolutionary standard from IS-95Ato CDMA-2000.

Posted: 20-November-2008 10:10:24 AM By: HamidAliKhan

It is used in CDMA 2000 also and its value is 32768and uses chipping rate 1.2288Mcps

Posted: 29-December-2008 07:34:41 AM By: waqqas1

It is of of period 242-1 chips at a chipping rate of 1.2288 Mchips/sec.

Posted: 31-January-2009 12:39:53 PM By: jahangir1983

The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.

Posted: 31-January-2009 12:42:22 PM By: jahangir1983

The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.

Posted: 31-January-2009 12:43:30 PM By: jahangir1983

The PN code of period 242-1 chips used in IS-95 systems at a chipping rate of 1.2288 Mchips/sec.

NOTE: This PN code is called the long code because its period is so much longer than the period of the pilot or short PN codes which is 215 or 32,768 chips. At the chipping rate of 1.2288 Mchips/sec the time period of the pilot code is only 262/3 msec or exactly 75 periods every 2 seconds.