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CDMA

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¼¿·ê¶óÀÇ ±âº»ÀûÀÎ ¿ø¸®¿Í CDMAÀÇ Çٽɱâ¼ú ºÐ¾ß¸¦ ½ÅµµÀÖ°Ô ¼³¸íÇÑ Ã¥À̶õ »ý°¢ÀÔ´Ï´Ù.
1 À̵¿Åë½Å ¹æ½Ä
1.1 À̵¿Åë½Å ¼­ºñ½º
1.1.1 ¹«¼±ÀüÈ­(CT : Codeless Telephone)
1.1.2 Á֯ļö °ø¿ëÅë½Å ½Ã½ºÅÛ(TRS)
1.2 ¼¿·ê·¯ À̵¿Åë½Å
1.2.1 ±âÁö±¹°ú ¼¿
1.2.2 Á֯ļö Àç»ç¿ë
1.3 µðÁöÅÐ Åë½Å °³¿ä
1.3.1 Source Coding
1.3.2 Channel Coding
1.3.3 Modulation
1.3.4 Frequency Spreading
1.3.5 Multiple Access
1.4 IS-95 and Friends
1.4.1 Ç¥ÁØÈ­ µ¿Çâ
1.4.2 Ç¥ÁØÈ­ ±â±¸
1.4.3 ITU
1.4.4 TIA
1.4.5 ±âŸ
1.4.6 IMT2000À» À§ÇÑ Ç¥ÁØÈ­ - 3GPP/3GPP2
1.5 PCS ½Ã½ºÅÛ
1.5.1 ½Ã½ºÅÛÀÇ ±¸¼º
1.5.2 ¸Á ÀÚ¿ø ÇÒ´ç

2 Basic Concept
2.1 Correlation°ú Normalization
2.1.1 ÀÚ±â»ó°ü(Auto-Correlation)
2.1.2 Orthogonal
2.1.3 ±ÔÁØÈ­(Normalization)
2.2 ¼±Çü°è(Linear System)
2.2.1 ÇÔ¼ö
2.2.2 Linear Time Invariant(LTI)
2.3 FourierÀÇ ½ÅÈ£ºÐ¼®
2.3.1 FourierÀÇ »ý°¢
2.3.2 Fourier Spectrum
2.3.3 Fourier Transform
2.3.4 Fourier º¯È¯ÀÇ ¼ºÁú
2.3.5 Áö¼öÇÔ¼ö ÀÇ Fourier º¯È¯
2.3.6 ÁÖ±âÇÔ¼öÀÇ Fourier º¯È¯
2.3.7 ½ÅÈ£ÀÇ ¿¡³ÊÁö/Àü·Â Ç¥Çö
2.3.8 Matched Filter
2.4 Ç¥º»È­ ÀÌ·Ð
2.4.1 ÀÚ¿¬ Ç¥º»È­(Natural Sampling)
2.4.2 ¼ø°£ Ç¥º»È­(Instance Sampling)
2.5 ½ÅÈ£ÀÇ Ç¥½Ã
2.5.1 µ¥½Ãº§(dB)
2.5.2 ´ë¿ªÆø(Bandwidth)
2.5.3 Error ÇÔ¼ö erf(x)¿Í erfc(x)
2.6 ÀâÀ½(Noise)
2.6.1 ¿­ ÀâÀ½(Thermal Noise)
2.6.2 ÀâÀ½Áö¼ö
2.7 ShannonÀÌ ¸»Çϴ ä³Î¿ë·®
2.8 OSI 7 Layer
2.8.1 ¹°¸®Ãþ(Physical Layer)
2.8.2 µ¥ÀÌÅ͸µÅ©Ãþ(Data link Layer)
2.8.3 ³×Æ®¿öÅ©Ãþ(Network Layer)
2.8.4 Àü´ÞÃþ(Transfort Layer)
2.8.5 ¼¼¼Ç°èÃþ(session Layer)
2.8.6 Ç¥Çö°èÃþ(Presentation Layer)
2.8.7 ¾îÇø®ÄÉÀ̼ÇÃþ(Application Layer)

3 DSSS¿Í CodeÀÌ·Ð
3.1 Spread Spectrum
3.1.1 Frequency Hoping°ú Direct Sequence
3.1.2 È®»êÅë½Å
3.1.3 È®»êÀÇ ÀǹÌ
3.1.4 È®»êÅë½ÅÀÇ Á¤·®ÀûÀÎ ÇØ¼®
3.2 CDM/CDMA Åë½Å¹æ½Ä
3.2.1 È®»êÅë½Å°ú ±âÁ¸ÀÇ Åë½Å
3.2.2 CDMA Åë½Å¹æ½ÄÀÇ Á¤·®Àû ÇØ¼®
3.2.3 Jamming°úÀÇ ÀüÅõ
3.3 ´ë¿ªÈ®Àå
3.4 ¿ë·®
3.4.1 ¾ó¶û ¿ë·®
3.4.2 CDMA °¡ÀÔÀÚ ¿ë·®
3.5 Code theory
3.5.1 Galois Field
3.5.2 ¼±Çü Code¿Í »ý¼º ´ÙÇ×½Ä
3.5.3 ¼±Çü CodeÀÇ ´ë¼öÀû Ç¥Çö
3.5.4 ¿ø½Ã ´ÙÇ×½Ä
3.6 PN Code
3.6.1 ÃÖÀåÄÚµåÀÇ ¼ö
3.6.2 PN CodeÀÇ Æ¯¼º
3.6.3 PN Äڵ带 CDMA¿¡¼­ »ç¿ëÇÏ´Â ¸î °¡Áö ÀÌÀ¯
3.7 Walsh Code
3.8 Gold Code

4 CDMA Demodulator
4.0 ¼­ ·Ð
4.1 Searcher Engine
4.1.1 PN Code
4.1.2 Dwell Algorithm
4.1.3 SearcherÀÇ µ¿ÀÛ
4.1.4 ÁÖ¿ä ±â´É
4.2 Searcher Block º° ±â´É
4.2.1 SEARCH Block
4.2.2 ACQ_CHK Block
4.2.3 INC ºí·Ï
4.3 Finger Demodulator
4.3.1 RSSI °è»ê
4.3.2 Á֯ļö ¿¡·¯ »êÃâ
4.3.3 Time Tracking - ˤȗ̧˞
4.3.4 Phase Lock Loop(PLL)
4.3.5 Delay Lock Loop(DLL)
4.3.6 Tau(¥ó) Dither Loop
4.4 Rake ¼ö½Å±â
4.4.1 ½É¹ú °áÇÕ±â(Symbol Combiner)
4.5 Searcher TaskÀÇ µ¿ÀÛ-Software
4.5.1 Ž»ö Parameter
4.5.2 °¢ »óÅÂ(State)ÀÇ µ¿ÀÛ

5 Àü·ÂÁ¦¾î
5.1 ¿Ö Àü·ÂÁ¦¾î¸¦ ÇØ¾ß Çϴ°¡?
5.2 ¾î¶»°Ô Àü·ÂÁ¦¾î¸¦ ÇÏ¸ç ¾î¶² Á¾·ù°¡ Àִ°¡?
5.2.1 Forward Àü·ÂÁ¦¾î
5.2.2 Reverse Àü·ÂÁ¦¾î
5.3 À̵¿ Åë½Å ä³Î Ư¡
5.3.1 Fading
5.3.2 Delay Spread
5.3.3 Doppler Spread
5.3.4 À½¿µÇö»ó(Shadowing)
5.3.5 ÀÎÁ¢Ã¤³Î ¹× µ¿ÀÏä³Î °£¼·
5.3.6 °æ·Î ¼Õ½Ç(Path loss)
5.4 Open Loop Power Control
5.4.1 ÃßÁ¤µÈ Access Ãâ·Â
5.4.2 °³¼±µÈ Open Loop Àü·Â Estimation
5.5 Closed Loop Power Control
5.5.1 Àü·ÂÁ¦¾î±×·ì
5.5.2 Forward Àü·ÂÁ¦¾î ºÎä³Î
5.5.3 Reverse Àü·ÂÁ¦¾î ºÎä³Î
5.5.4 Àü·ÂÁ¦¾î ºÎä³Î Àü¼Û Timing
5.5.5 Gated Mode¿¡¼­ÀÇ µ¿ÀÛ
5.5.6 Àü·ÂÁ¦¾î Bit (PCB)
5.5.7 Àü·ÂÁ¦¾î ÀÓ°èÄ¡(Àü·ÂÁ¦¾î Threshold)
5.6 Other Closed Loop Àü·Â - L3 Àü·ÂÁ¦¾î
5.6.1 °ü·Ã ¸Þ½ÃÁö
5.6.2 Frame error Rate Åë°èº¸°í
5.6.3 ´Ü¸»±âÀÇ µ¿ÀÛ
5.6.4 Gain Á¶Á¤
5.6.5 Àü·Â°ü¸®
5.6.6 EIB/QIB¿¡ ÀÇÇÑ ¹æ¹ý
5.7 Outer Loop Power Control
5.7.1 ¿ÜºÎLoop Àü·ÂÁ¦¾î °ü·Ã ½Ã½ºÅÛ Parameter
5.7.2 Outer Loop Power Control Algorithm
5.7.3 ´Ü¸»±âÀÇ Outer Loop Power Control
5.7.4 Outer Loop Power Control Parameter
5.8 ÀÌ ÀåÀ» ¸¶Ä¡¸é¼­¡¦
5.8.1¿Í FERÀÇ °ü°è
5.8.2 Àü·ÂÁ¦¾îÀÇ ºÒÈ®½Ç¼º
5.8.3 °£¼·¿¡ ´ëÇÑ ÇâÈÄ ¹æ¹ýµé
5.8.4 Open Loop¿Í Closed Loop Àü·ÂÁ¦¾î
5.8.5 ¿©±â¼­ ¶Ç ´Ù¸¥ ¹®Á¦

6 Handoff
6.1 Handoff¸¦ À§ÇÑ Parameter
6.1.1 Pilot Set
6.1.2 Search Window
6.1.3 Threshold
6.2 Mobile Assistant Soft Handoff (MASHO)
6.2.1 Pilot SetÀÇ ÃµÀÌ
6.2.2 Soft Handoff ÀýÂ÷
6.3 New Soft Handoff
6.3.1 Why New algorithm?
6.3.2 Dynamic Threshold
6.3.3 Pilot SetÀÇ ÃµÀÌ
6.3.4 Fast Rising Pilot
6.4 Hard Handoff
6.4.1 Hard Handoff ÀýÂ÷
6.4.2 Hard HandoffÀÇ À¯Çü
6.4.3 Á֯ļö°£ÀÇ Hard Handoff
6.4.4 RC°£ Hard Handoff
6.4.5 Hard HandoffÀÇ ¸Þ½ÃÁö ó¸®
6.5 MAHHO: Mobile Assistant Hard Handoff
6.5.1 Failure and Return
6.5.2 Search±â´É
6.5.3 MAHHO¸¦ À§ÇØ »õ·Î Áö¿øµÇ´Â ¸Þ½ÃÁöµé
6.5.4 Call Flow
6.6 Idle Handoff
6.6.1 ÀýÂ÷
6.6.2 Neighbor Configuration
6.7 Access Handoff
6.7.1 Pilot Reporting
6.7.2 Access Entry Handoff
6.7.3 Access Probe Handoff
6.7.4 Access Handoff
6.7.5 Extended System Parameter message
6.7.6 ä³ÎÇÒ´ç Áß Soft Handoff
6.8 Á¤¸®Çϱâ

7 Radio Transmission Technique
7.0 QualcommÀÇ ±âº»ÀûÀÎ »ý°¢Àº ?
7.1 Channel Coding
7.1.1 Convolutional ºÎȣȭ
7.1.2 Viterbi º¹È£È­±â
7.1.3 IS-95ÀÇ Convolutional ºÎȣȭ±â
7.1.4 Code Symbol Repetition
7.1.5 Åͺ¸ ºÎȣȭ
7.2 Interleaving
7.2.1 µ¥ÀÌÅÍ ½ºÅ©·¥ºí¸µ
7.3 Modulation
7.3.1 µðÁöÅРõÀÌ º¯Á¶
7.3.2 À§»óõÀÌ º¯Á¶¿Í BPSK
7.3.3 QPSK(Quadrature Phase Shift Keying)
7.3.4 OQPSK(Offset QPSK)
7.3.5 IS-95ÀÇ º¯Á¶
7.4 ´ÙÁßÈ­¿Í ´ÙÁßÁ¢¼Ó
7.5 Forward ä³Î ±¸Á¶
7.5.1 Pilot ä³Î
7.5.2 µ¿±âä³Î
7.5.3 È£Ãâä³Î
7.5.4 Forward Åëȭä³Î
7.6 Reverse ä³Î ±¸Á¶
7.6.1 Access ä³Î
7.6.2 Reverse Åëȭä³Î
7.6.3 Reverse Pilot ä³Î

8 IS-95 Call Flow
8.1 Initial State ó¸®
8.1.1 ½Ã½ºÅÛ °áÁ¤ »óÅÂ
8.1.2 Pilot ȹµæ »óÅÂ
8.1.3 µ¿±â ȹµæ »óÅÂ
8.1.4 ½Ã°£ º¯°æ »óÅÂ
8.2 Idle(Page) State ó¸®
8.2.1 Slotted Mode
8.2.2 È£Ãâä³Î Monitor
8.2.3 Overhead Messages update
8.2.4 Page Match Operation
8.2.5 Broadcast Slot Monitoring
8.2.6 Quick È£Ãâä³Î
8.2.7 ¸í·É°ú ¸Þ½ÃÁö ó¸® µ¿ÀÛ
8.3 Access Attempt State ó¸®
8.3.1 Access ó¸®
8.3.2 System AccessÀÇ Sub State
8.4 Traffic State ó¸®
8.4.1 Service Option
8.4.2 Service ±¸¼º
8.4.3 Service Çù»ó
8.4.4 Service ±¸¼º°ú Çù»óÀ» Áö¿øÇÏ´Â ¸Þ½ÃÁö
8.4.5 Long Code õÀÌ
8.4.6 ÅëÈ­ »óÅÂÀÇ Sub State°ü¸®
8.5 ´Ü¸»±â ½Äº°°ú º¸¾È
8.5.1 ´Ü¸»±âÀÇ ½Äº°
8.5.2 IMSI_SÀÇ ºÎȣȭ
8.5.3 Hash ÇÔ¼ö
8.5.4 ÀÇ»ç ·£´ý ¹ß»ý±â
8.6 »ç¿ëÀÚ ÀÎÁõ
8.6.1 °³¿ä
8.6.2 °øÀ¯ ºñ¹Ð µ¥ÀÌÅÍ(SSD)ÀÇ °»½Å
8.6.3 ´Ü¸»±â µî·ÏÀÎÁõ
8.6.4 À¯ÀϽõµ ÀÀ´ä
8.6.5 ´Ü¸»±â ¹ßÈ£ÀÎÁõ
8.6.6 ´Ü¸»±â Âø È£ ÀÎÁõ
8.6.7 CAVE Algorithm
8.7 È®ÀÎÀýÂ÷
8.7.1 ´ë±â»óÅÂÀÇ ¸Þ½ÃÁö È®ÀÎ
8.7.2 ÅëÈ­»óÅÂ
8.8 µî·Ï(Registration)

9 Vocoder
9.1 Voice Source Coding ¹æ½Ä
9.2 ¹ß¼ºÀÇ ¿ø¸®
9.3 QCELP
9.3.1 ½ºÆåÆ®·³ ºÐ¼®
9.3.2 PitchŽ»ö
9.3.3 Codebook Ž»ö
9.4 Àü¼Û·ü °áÁ¤
9.5 °á·Ð

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