TIA-127-C-2007 Enhanced Variable Rate Codec Speech Service Options 3 68 and 70 for Wideband Spread Spectrum Digital Systems《增强型可变速率编码器 宽带扩频数字系统的语音业务选择3、68和70》.pdf

《TIA-127-C-2007 Enhanced Variable Rate Codec Speech Service Options 3 68 and 70 for Wideband Spread Spectrum Digital Systems《增强型可变速率编码器 宽带扩频数字系统的语音业务选择3、68和70》.pdf》由会员分享，可在线阅读，更多相关《TIA-127-C-2007 Enhanced Variable Rate Codec Speech Service Options 3 68 and 70 for Wideband Spread Spectrum Digital Systems《增强型可变速率编码器 宽带扩频数字系统的语音业务选择3、68和70》.pdf（342页珍藏版）》请在麦多课文档分享上搜索。

1、 TIA STANDARD Enhanced Variable Rate Codec, Speech Service Options 3, 68, and 70 for Wideband Spread Spectrum Digital Systems TIA-127-C (Revision to TIA-127-B) February 2007 TELECOMMUNICATIONS INDUSTRY ASSOCIATION Representing the telecommunications industry in association with the Electronic Indust

2、ries Alliance Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating mis

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5、 and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Publication. This Standard doe

6、s not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limitations before its use. (Fro

7、m Project No. 3-3292-RV3, formulated under the cognizance of the TIA TR-45 Mobile (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development

8、 or any editing process. The use or practice of contents of this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and pu

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15、 investigate products, designs or services or any claims of compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR

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17、, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF THE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or ne

18、tworking permitted without license from IHS-,-,-TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGE

19、S FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF

20、 THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-127-C iFOREWORD 1

21、 These technical requirements form a standard for Service Options 3, 68, and 70, enhanced variable 2 rate, two way speech service options known as EVRC-A, EVRC-B, and EVRC-WB respectively. 3 These service options communicate at one of four channel rates corresponding to the 9600 bps, 4 4800 bps, 240

22、0, and 1200 bps frame rates. However, Service Option 3 does not use 2400 bps 5 channel frame rate. The speech coder source bit-rate corresponding to the above mentioned 4 6 channel rate are 8550, 4000, 2000, and 800 bps. Service Options 68, and 70 have the capability to 7 operate in multiple operati

23、ng points at different average rates of operation that can be used for 8 obtaining different system capacity while trading off speech quality gracefully. 9 This standard does not address the quality or reliability of Service Options 3. 68, and 70 nor does it 10 cover equipment performance or measure

24、ment procedures. 11 12 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-127-C iiNOTES 1 1. The appropriate version of the Minimum Performance Standard for the enhanced variab

25、le rate 2 codecs, EVRC-A, EVRC-B, and EVRC-WB provides specifications and measurement methods. 3 2. “Base station” refers to the functions performed on the landline side, which are typically distributed 4 among a cell, a sector of a cell, a mobile switching center, and a personal communications swit

26、ching 5 center. 6 3. This document uses the following verbal forms: “Shall” and “shall not” identify requirements to be 7 followed strictly to conform to the standard and from which no deviation is permitted. “Should” and 8 “should not” indicate that one of several possibilities is recommended as pa

27、rticularly suitable, without 9 mentioning or excluding others; that a certain course of action is preferred but not necessarily 10 required; or that (in the negative form) a certain possibility or course of action is discouraged but not 11 prohibited. “May” and “need not” indicate a course of action

28、 permissible within the limits of the 12 standard. “Can” and “cannot” are used for statements of possibility and capability, whether material, 13 physical, or causal. 14 4. Footnotes appear at various points in this specification to elaborate and further clarify items 15 discussed in the body of the

29、 specification. 16 5. Unless indicated otherwise, this document presents numbers in decimal form. 17 Binary numbers are distinguished in the text by the use of single quotation marks. In some tables, 18 binary values may appear without single quotation marks if table notation clearly specifies that

30、19 values are binary. The character x is used to represent a binary bit of unspecified value. For 20 example xxx00010 represents any 8-bit binary value such that the least significant five bits equal 21 00010. 22 Hexadecimal numbers (base 16) are distinguished in the text by use of the form 0xhK h,

31、where 23 hK h represents a string of hexadecimal digits. For example, 0x2FA1 represents a number whose 24 binary value is 10111110100001 and whose decimal value is 12913. 25 26 27 28 29 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduct

32、ion or networking permitted without license from IHS-,-,-TIA-127-C iiiNOTES 1 6. The following conventions apply to mathematical expressions in this standard: 2 x indicates the largest integer less than or equal to x: 1.1 = 1, 0.1 = 1, and 1.1 =-2. 3 x indicates the smallest integer greater than or

33、equal to x: 1.1 = 2, 0.2 = 2, and 1.1 =-4 1. 5 x indicates the absolute value of x: 17 =17, 17 =17. 6 indicates exclusive OR. 7 min(x, y) indicates the minimum of x and y. 8 max(x, y) indicates the maximum of x and y. 9 In figures, indicates multiplication. In formulas within the text, multiplicatio

34、n is implicit. For 10 example, if h(n) and pL(n) are functions, then h(n) pL(n) = h(n) pL(n). 11 x mod y indicates the remainder after dividing x by y: x mod y = x - (y yx / ). 12 round(x) is traditional rounding: round(x) = sign(x) 5.0+x , where 13 () .0x10x1xsign=14 indicates summation. If the sum

35、mation symbol specifies initial and terminal values, and the 15 initial value is greater than the terminal value, then the value of the summation is 0. For example, 16 if N=0, and if f(n) represents an arbitrary function, then 17 =N1n0.f(n)18 The bracket operator, , isolates individual bits of a bin

36、ary value. VARn refers to bit n of the 19 binary representation of the value of the variable VAR, such that VAR0 is the least significant bit 20 of VAR. The value of VARn is either 0 or 1. 21 Unless otherwise specified log(x) denotes logarithm at base 10 throughout this document. 22 Copyright Teleco

37、mmunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-127-C ivNORMATIVE REFERENCES 1 Ref. Document Standards N1 Upper Layer (Layer 3) Signalling Standard for cdma2000 Spread Spectrum Systems TIA-

38、2000.5-D, March 2004 N2 Discontinuous Transmission (DTX) of Speech in cdma2000 Systems TIA-1095, April 2006 N3 Cellular System Recommended Minimum Performance Standards for Full-Rate Speech Codes (superceded by TIA -95-B) TIA/EIA/IS-95, May 1992 N4 Mobile Station-Base Station Compatibility Standard

39、for Wideband Spread Spectrum Cellular Systems TIA-95-B-04(R2004), October 2004 N5 Introduction to cdma2000 Standards for Spread Spectrum Systems TIA-2000.1-D, tbd INFORMATIVE REFERENCES 2 Ref. Document Standards S1 Telecommunications Telephone Terminal Equipment Transmission Requirements for Digital

40、 Wireline Telephones ANSI/EIA/TIA-579-A-98 S2 Pulse Code Modulation (PCM) of Voice Frequencies ITU-T Recommendation G.711, November 1988 S3 Transmission Performance Characteristics of Pulse Code Modulation ITU-T Recommendation G.712, November 2001 S4 IEEE Standard Methods for Measuring Transmission

41、Performance of Analog and Digital Telephone Sets IEEE Standard 269-2002, 2002 S5 Method for Determining Objective Loudness Ratings of Telephone Connections IEEE Standard 661-1979, 1979 S6 Minimum Performance Specification for the Enhanced Variable Rate Codec, Speech Service Option 3 for Spread Spect

42、rum Digital Systems TIA/EIA/IS-718, July 1998 S7a Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spectrum Digital Systems TIA/EIA/IS-127-1, August 1998 S7b Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spectrum Digital Systems TIA/EIA/IS-127-3,

43、September 2001 S8 Enhanced Variable Rate Codec, Speech Service Option 3 for Wideband Spread Spectrum Digital Systems TIA-127-A, May 2004 Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from

44、IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or

45、networking permitted without license from IHS-,-,-Copyright Telecommunications Industry Association Provided by IHS under license with EIANot for ResaleNo reproduction or networking permitted without license from IHS-,-,-TIA-127-C vRef. Document S9 Digital network echo cancellers ITU-T Recommendatio

46、n G.168, August 2004 S10 Operational and interworking requirements for DCEs operating in the text telephone mode ITU-T Recommendation V.18, November 2000 S11 Transmission Characteristics for Wideband (150-7000 Hz) Digital Handset Telephones. ITU-T Recommendation P.311, February, 1998 S12 Transmissio

47、n Characteristics for Wideband (150-7000 Hz) Digital Hands-free Telephony Terminals. ITU-T Recommendation P.341, February, 1998 Resources R1 Proakis, J. G. and Manolakis, D. G., Introduction to Digital Signal Processing, New York, Macmillan 1988, pp. 721-722 R2 Rabiner, L. R. and Schafer, R. W., Dig

48、ital Processing of Speech Signals New Jersey, Prentice-Hall Inc., 1978 R3 Crochiere, R. E. and Rabiner L. R., Multirate Digital Signal Processing New Jersey, Prentice-Hall Inc., 1983 R4 Oppenheim, A. V. and Schafer, R. W., Digital Signal Processing New Jersey, Prentice-Hall Inc., 1975 R5 Proakis, J. G. and Manolakis, D. G., Introduction to Digital Signal Processing New York, Macmillan, 1988 R6 Dellar, J. R., Proakis, J. G., Hansen, J. H. L., Discrete-Time Processing of Speech Signals New York, Macmillan, 1993 R7 A