3GPP2 C.S0014-D Version 3.0 October 2010 Enhanced Variable Rate Codec, Speech Service Options 3, 68, 70, and 73 for Wideband Spread Spectrum Digital Systems © 2010 3GPP2 3GPP2 and its Organizational Partners claim copyright in this document and individual Organizational Partners may copyright and issue documents or standards publications in individual Organizational Partner's name based on this document. Requests for reproduction of this document should be directed to the 3GPP2 Secretariat at [email protected]. Requests to reproduce individual Organizational Partner's documents should be directed to that Organizational Partner. See www.3gpp2.org for more information. 3GPP2 C.S0014-D v3.0 REVISION HISTORY Revision Date C.S0014-0 v1.0 Enhanced Variable Rate Codec (EVRC) December 1999 C.S0014-0-1 Enhanced Variable Rate Codec, Speech Service December 1999 Option 3 for Wideband Spread Spectrum Systems – Addendum 1 C.S0014-0-2 Enhanced Variable Rate Codec, Speech Service December 1999 Option 3 for Wideband Spread Spectrum Digital Systems – Addendum 2 C.S0014-0-3 v1.0 EVRC TTY/TDD Extension – Release 0 – May 2001 Addendum 3 C.S0014-A v1.0 Enhanced Variable Rate Codec, Speech Service May 2004 Option 3 for Wideband Spread Spectrum Digital Systems C.S0014-B v1.0 Enhanced Variable Rate Codec, Speech Service May 2006 Options 3 and 68 for Wideband Spread Spectrum Digital Systems C.S0014-C v1.0 Enhanced Variable Rate Codec, Speech Service February 2007 Options 3, 68, and 70 for Wideband Spread Spectrum Digital Systems C.S0014-D v1.0 Enhanced Variable Rate Codec, Speech Services May 2009 Options 3, 68, 70, and 73 for Wideband Spread Spectrum Digital Systems C.S0014-D v2.0 Enhanced Variable Rate Codec, Speech Services January 2010 Options 3, 68, 70, and 73 for Wideband Spread Spectrum Digital Systems C.S0014-D v3.0 Enhanced Variable Rate Codec, Speech Services October 2010 Options 3, 68, 70, and 73 for Wideband Spread Spectrum Digital Systems 3GPP2 C.S0014-D v3.0 1 FOREWORD 2 (This foreword is not part of this Standard.) 3 The scope of this document specifies the technical requirements that form a standard for Service Options 3, 68, 70, 4 and 73, enhanced variable rate, two-way speech service options known as EVRC-A, EVRC-B, EVRC-WB, and 5 EVRC-NW respectively. These service options communicate at one of four channel rates corresponding to the 9600 6 bps, 4800 bps, 2400 bps, and 1200 bps frame rates. However, Service Options 3 and 70 do not use 2400 bps channel 7 frame rate. The speech coder source bit-rate corresponding to the above mentioned 4 channel rates are 8550 bps, 8 4000 bps, 2000 bps, and 800 bps. Service Options 68, 70, and 73 have the capability to operate in multiple capacity 9 operating points at different average rates of operation that can be used for obtaining different system capacity while 10 trading off speech quality gracefully. 11 This standard does not address the quality or reliability of Service Options 3, 68, 70, and 73 nor does it cover 12 equipment performance or measurement procedures. 13 i 3GPP2 C.S0014-D v3.0 1 NOTES 2 1. The appropriate version of the Minimum Performance Standard for the enhanced variable rate codecs, EVRC- 3 A, EVRC-B, EVRC-WB and EVRC-NW provides specifications and measurement methods. 4 2. “Base station” refers to the functions performed on the landline side, which are typically distributed among a 5 cell, a sector of a cell, a mobile switching center, and a personal communications switching center. 6 3.This document uses the following verbal forms: “Shall” and “shall not” identify requirements to be followed 7 strictly to conform to the standard and from which no deviation is permitted. “Should” and “should not” 8 indicate that one of several possibilities is recommended as particularly suitable, without mentioning or 9 excluding others; that a certain course of action is preferred but not necessarily required; or that (in the negative 10 form) a certain possibility or course of action is discouraged but not prohibited. “May” and “need not” indicate 11 a course of action permissible within the limits of the standard. “Can” and “cannot” are used for statements of 12 possibility and capability, whether material, physical, or causal. 13 4.3. Footnotes appear at various points in this specification to elaborate and further clarify items discussed in the 14 body of the specification. 15 5.4. Unless indicated otherwise, this document presents numbers in decimal form. 16 Binary numbers are distinguished in the text by the use of single quotation marks. In some tables, binary values 17 may appear without single quotation marks if table notation clearly specifies that values are binary. The 18 character ‘x’ is used to represent a binary bit of unspecified value. For example ‘xxx00010’ represents any 8- 19 bit binary value such that the least significant five bits equal ‘00010’. 20 Hexadecimal numbers (base 16) are distinguished in the text by use of the form 0xh h, where h h 21 represents a string of hexadecimal digits. For example, 0x2FA1 represents a number whose binary value is 22 ‘10111110100001’ and whose decimal value is 12913. 23 6.5. “Full-Rate” and “Rate 1” are used interchangeably in this document. The same rule applies to “Half-Rate” and 24 “Rate 1/2,” “Quarter-Rate” and “Rate 1/4,” and “Eighth-Rate” and “Rate 1/8.” 25 7.6. The following conventions apply to mathematical expressions in this standard: 26 o x indicates the largest integer less than or equal to x: 1.1 = 1, 1.0 = 1, and -1.1 27 o x indicates the smallest integer greater than or equal to x: 1.1 = 2, 2.0 = 2, and 1.1 = . 28 o |x| indicates the absolute value of x: |–17| = 17, |17| = 17. 29 o indicates exclusive OR. 30 o min(x, y) indicates the minimum of x and y. 31 o max(x, y) indicates the maximum of x and y. 32 o In figures, indicates multiplication. In formulas within the text, multiplication is implicit. For example, if 33 h(n) and pL(n) are functions, then h(n) pL(n) = h(n) pL(n). 34 o x mod y indicates the remainder after dividing x by y: x mod y = x - (y x/y). 35 o round(x) is traditional rounding: round(x) = sign(x) |x| 0.5, where 1 x 0 signx . 1 x 0 36 ii 3GPP2 C.S0014-D v3.0 1 o indicates summation. If the summation symbol specifies initial and terminal values, and the initial 2 value is greater than the terminal value, then the value of the summation is 0. For example, if N=0, and if 3 f(n) represents an arbitrary function, then N f(n) 0. 4 n1 5 o The bracket operator, [ ], isolates individual bits of a binary value. VAR[n] refers to bit n of the binary 6 representation of the value of the variable VAR, such that VAR[0] is the least significant bit of VAR. The 7 value of VAR[n] is either 0 or 1. 8 o Unless otherwise specified log(x) denotes logarithm at base 10 throughout this document. iii 3GPP2 C.S0014-D v3.0 1 REFERENCES 2 The following standards contain provisions which, through reference in this text, constitute provisions of this 3 Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and 4 parties to agreements based on this Standard are encouraged to investigate the possibility of applying the most recent 5 editions of the standards indicated below. 6 7 NORMATIVE REFERENCES 8 N1. C.S0005-E, Upper Layer (Layer 3) Signalling Standard for cdma2000 Spread Spectrum Systems, September 2009. 9 N2. C.S0076-0, Discontinuous Transmission (DTX) of Speech in cdma2000 Systems, December 2005. 10 N3. TIA-95-B (R2004), Mobile Station-Base Station Compatibility Standard for Wideband Spread Spectrum Cellular 11 Systems, October 2004. 12 N4. C.S003-E, Medium Access Control (MAC) Standard for cdma2000 Spread Spectrum Systems, September 2009. 13 N5. ANSI/EIA/TIA-579-A, Telecommunications Telephone Terminal Equipment Transmission Requirements for Digital 14 Wireline Telephones, October 1998. 15 N6. ITU-T Recommendation G.711, Pulse Code Modulation (PCM) of Voice Frequencies, November 1988. 16 N7. ITU-T Recommendation G.712, Transmission Performance Characteristics of Pulse Code Modulation, November 17 2001. 18 N8. IEEE Standard 269-2002, IEEE Standard Methods for Measuring Transmission Performance of Analog and Digital 19 Telephone Sets, Handsets, and Headsets, April 2003. 20 N9. IEEE Standard 661-1979 (R2008), Method for Determining Objective Loudness Ratings of Telephone Connections, 21 September 2008. 22 N10. C.S0002-E, Physical Layer Standard for cdma2000 Spread Spectrum Systems, September 2009. 23 N11. ITU-T Recommendation V.18, Operational and interworking requirements for DCEs operating in the text telephone 24 mode, November 2000. 25 N12. ITU-T Recommendation P.311, Transmission Characteristics for Wideband (150-7000 Hz) Digital Handset 26 Telephones, June 2005. 27 N13. ITU-T Recommendation P.341, Transmission Characteristics for Wideband (150-7000 Hz) Digital Hands-free 28 Telephony Terminals, June 2005. 29 30 INFORMATIVE REFERENCES 31 S1. C.S0014-0 v1.0, Enhanced Variable Rate Codec (EVRC), December 1999. 32 S2. C.R1001-G, Administration of ParameterValue Assignments for cdma2000 Spread Spectrum Standards, June 2009. 33 S3. ITU-T Recommendation G.168, Digital network echo cancellers, March 2009. 34 R1. Proakis, J. G. and Manolakis, D. G., Introduction to Digital Signal Processing, Macmillan, New York, 1988. 35 R2. Rabiner, L. R. and Schafer, R.