Presentation is loading. Please wait.

Presentation is loading. Please wait.

Doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Modulation Accuracy Date: 2013-05-13 Authors: Name AffiliationsAddressPhoneemail Ron.

Published byErick Mosley Modified over 9 years ago

Similar presentations

Presentation on theme: "Doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Modulation Accuracy Date: 2013-05-13 Authors: Name AffiliationsAddressPhoneemail Ron."— Presentation transcript:

1 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Modulation Accuracy Date: 2013-05-13 Authors: Name AffiliationsAddressPhoneemail Ron PoratBroadcom rporat@broadcom.com Nihar JindalBroadcom Sameer VermaniQualcomm Tao TianQualcomm Eldad PerahiaIntel Corp. eldad.perahia@intel.com Shahrnaz AziziIntel Corp. shahrnaz.azizi@intel.com Tom TetzlaffIntel Corp. thomas.a.tetzlaff@intel.com Thomas KenneyIntel Corp. thomas.j.kenney@intel.com Hongyuan ZhangMarvell Hongyuan@marvell.com Sudhir SrinivasaMarvell sudhirs@marvell.com Yong LiuMarvell yongliu@marvell.com Yongho Seok LG Electronics LG R&D Complex Anyang- Shi, Kyungki-Do, Korea +82-31-450-1947yongho.seok@lge.com Jinsoo Choi LG Electronics Jeongki Kim LG Electronics Hangyu Cho LG Electronics Vinko ErcegBroadcom verceg@broadcom.com Jun ZhengBroadcom Slide 1

2 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Authors continued: Name AffiliationsAddressPhoneemail Bin Tian Qualcomm Eugene Baik Qualcomm Lin Yang Qualcomm Hemanth Sampath Qualcomm Richard Van Nee Qualcomm Allert Van Zelst Qualcomm VK Jones Qualcomm Sun, BoZTE sun.bo1@zte.com.cn Lv, KaiyingZTE lv.kaiying@zte.com.cn Huai-Rong ShaoSamsung hr.shao@samsung.com Chiu NgoSamsung chiu.ngo@samsung.com Minho CheongETRI 138 Gajeongno, Yuseong-gu, Dajeon, Korea +82 42 860 5635minho@etri.re.kr Jae Seung LeeETRI jasonlee@etri.re.kr Hyoungjin KwonETRI kwonjin@etri.re.kr Jaewoo ParkETRI parkjw@etri.re.kr Sok-kyu LeeETRI Sk-lee@etri.re.kr Sayantan ChoudhuryNokia 2054 University Avenue, Suite 600, Berkeley, CA 94704 +1 510 599 9268 sayantan.choudhury@nokia.com Klaus DopplerNokia Rojan ChitrakarPanasonic Rojan.Chitrakar@sg.panasonic.com Ken MoriPanasonic mori.ken1@jp.panasonic.com Harya WicaksanaPanasonic Harya.Wicaksana@sg.panason ic.com Slide 2

3 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Authors continued: Slide 3

4 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom 24.3.17.4 Modulation accuracy This section is currently empty. We propose text for all subsections –24.3.17.4.1 Introduction to modulation accuracy tests –24.3.17.4.2 Transmit center frequency leakage –24.3.17.4.3 Transmitter constellation error –24.3.17.4.4 Transmitter modulation accuracy (EVM) test The proposed text is based on 11ac with slight modifications as appropriate for 11ah Slide 4

5 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom 24.3.17.4.1 Introduction to modulation accuracy tests Transmit modulation accuracy specifications are described in 24.3.17.4.2 (Transmit center frequency leakage) and 24.3.17.4.3 (Transmitter constellation error). The test method is described in 24.3.17.4.4 (Transmitter modulation accuracy (EVM) test). Slide 5

6 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom 24.3.17.4.2 Transmit center frequency leakage TX LO leakage shall meet the following requirements for all formats and bandwidths : –When the RF LO is in the center of the transmitted PPDU BW, the power measured at the center of transmission BW using resolution BW 31.25 kHz shall not exceed the average power per-subcarrier of the transmitted PPDU, or equivalently, ( ), where P is the transmit power per antenna in dBm, and N ST is defined in Table 24-4 (Timing-related constants). –When the RF LO is not at the center of the transmitted PPDU BW, the power measured at the location of the RF LO using resolution BW 31.25 kHz shall not exceed the maximum of -27dB relative to the total transmit power and -15dBm, or equivalently, where P is the transmit power per antenna in dBm. The transmit center frequency leakage is specified per antenna. Slide 6

7 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom 24.3.17.4.3 Transmitter constellation error The relative constellation RMS error, calculated by first averaging over subcarriers, OFDM PPDUs and spatial streams (see Equation (20-89)) shall not exceed a data-rate dependent value according to Table 24-32 (Allowed relative constellation error versus constellation size and coding rate). The number of spatial streams under test shall be equal to the number of utilized transmitting STA antenna (output) ports and also equal to the number of utilized testing instrumentation input ports. In the test, N SS =N STS (no STBC) shall be used. Each output port of the transmitting STA shall be connected through a cable to one input port of the testing instrumentation. The requirements apply to 1 MHz, 2 MHz, 4 MHz, 8 MHz and 16 MHz transmissions. Table 24-32 Slide 7 * Allowed relative constellation error versus constellation size and coding rate ModulationCoding rateRelative constellation error (dB) BPSK1/2 rep2TBD BPSK1/2-5 QPSK1/2-10 QPSK3/4-13 16-QAM1/2-16 16-QAM3/4-19 64-QAM2/3-22 64-QAM3/4-25 64-QAM5/6-27 256-QAM3/4-30 256-QAM5/6-32

8 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom 24.3.17.4.4 Transmitter modulation accuracy (EVM) test The transmit modulation accuracy test shall be performed by instrumentation capable of converting the transmitted signals into a stream of complex samples at sampling rate greater than or equal to the bandwidth of the signal being transmitted; except that for duplicate transmissions, each 1 MHz or 2 MHz subchannel may be tested independently while all subchannels are being transmitted. The instrument shall have sufficient accuracy in terms of I/Q arm amplitude and phase balance, DC offsets, phase noise, and analog to digital quantization noise. A possible embodiment of such a setup is converting the signals to a low IF frequency with a microwave synthesizer, sampling the signal with a digital oscilloscope and decomposing it digitally into quadrature components. The sampled signal shall be processed in a manner similar to an actual receiver, according to the following steps, or equivalent procedure: a)Start of PPDU shall be detected. b)Transition from STF to LTF1 shall be detected and fine timing shall be established. c)Coarse and fine frequency offsets shall be estimated. d)Symbols in a PPDU shall be de-rotated according to estimated frequency offset. e)For each LTF symbol, transform the symbol into subcarrier received values, estimate the phase from the pilot subcarriers, and de- rotate the subcarrier values according to the estimated phase. f)Estimate the complex channel response coefficient for each of the subcarriers and each of the transmit streams. g)For each of the data OFDM symbols: transform the symbol into subcarrier received values, estimate the phase from the pilot subcarriers, de-rotate the subcarrier values according to the estimated phase, group the results from all the receiver chains in each subcarrier to a vector, and multiply the vector by a zero-forcing equalization matrix generated from the estimated channel. h)For each data-carrying subcarrier in each spatial stream, find the closest constellation point and compute the Euclidean distance from it. i)Compute the average across PPDUs of the RMS of all errors per PPDU as given by Equation (20-89). The test shall be performed over at least 20 PPDUs ( as defined in Equation (20-89)). The PPDUs under test shall be at least 16 data OFDM symbols long. Random data shall be used for the symbols. Slide 8

9 doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Straw Poll Do you support the proposed text in slides 5-8? Yes No ABS Slide 9

Download ppt "Doc.: IEEE 802.11-13/0508r0 Submission May 2013 Ron Porat, Broadcom Modulation Accuracy Date: 2013-05-13 Authors: Name AffiliationsAddressPhoneemail Ron."

Similar presentations

Doc.: IEEE 802.11-12/0815r0 Submission July 2012 Ron Porat, Broadcom Q Matrix Requirement for 1MHz/2MHz detection Date: 2012-07-16 Authors: Slide 1.

Doc.: IEEE /0815r0 Submission July 2012 Ron Porat, Broadcom Q Matrix Requirement for 1MHz/2MHz detection Date: Authors: Slide 1.
Restricted Access Window Signaling for Uplink Channel Access

Restricted Access Window Signaling for Uplink Channel Access
Doc.: IEEE 802.11-12/0363r1 Submission Pilot Value Definitions March 2012 Seunghee Han, LG ElectronicsSlide 1 Date: 2012-03-12 Authors:

Doc.: IEEE /0363r1 Submission Pilot Value Definitions March 2012 Seunghee Han, LG ElectronicsSlide 1 Date: Authors:
Phase Tracking During VHT-LTF

Phase Tracking During VHT-LTF
Doc.: IEEE 802.11-14/1399r0 Submission November 2014 Multi-Carrier Training Field for OFDM Transmission in 802.11aj (45GHz) Authors/contributors: Date:

Doc.: IEEE /1399r0 Submission November 2014 Multi-Carrier Training Field for OFDM Transmission in aj (45GHz) Authors/contributors: Date:
Doc.: IEEE 802.11-12/0816r0 Submission July 2012 Channel Selection for 802.11ah Date: 2012-07-16 Slide 1 Name AffiliationsAddressPhoneemail Huai-Rong Shao.

Doc.: IEEE /0816r0 Submission July 2012 Channel Selection for ah Date: Slide 1 Name AffiliationsAddressPhone Huai-Rong Shao.
Submission doc.: IEEE 802.11-12/0834r0 Speed Frame Exchange Date: 2012-07-16 Slide 1 Authors: July 2012 Eric Wong, Broadcom NameAffiliationsAddressPhoneEmail.

Submission doc.: IEEE /0834r0 Speed Frame Exchange Date: Slide 1 Authors: July 2012 Eric Wong, Broadcom NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-12/1302r0 Submission November 2012 Yongho Seok, LG ElectronicsSlide 1 TXOP Truncation Date: 2012-11-12 Authors: NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /1302r0 Submission November 2012 Yongho Seok, LG ElectronicsSlide 1 TXOP Truncation Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-11/1484r1 Submission November 2011 Hongyuan Zhang, et. Al.Slide 1 11ah Data Transmission Flow Date: 2011-11-07 Authors:

Doc.: IEEE /1484r1 Submission November 2011 Hongyuan Zhang, et. Al.Slide 1 11ah Data Transmission Flow Date: Authors:
Submission doc.: IEEE 802.11-15/1088r0 September 2015 Daewon Lee, NewracomSlide 1 LTF Design for Uplink MU-MIMO Date: 2015-09-14 Authors:

Submission doc.: IEEE /1088r0 September 2015 Daewon Lee, NewracomSlide 1 LTF Design for Uplink MU-MIMO Date: Authors:
Doc.: IEEE 802.11-12/0831r0 Submission July 2012 Yongho Seok, LG ElectronicsSlide 1 Uplink Channel Access General Procedure Date: 2012-07-12 Authors: NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /0831r0 Submission July 2012 Yongho Seok, LG ElectronicsSlide 1 Uplink Channel Access General Procedure Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-12/1093r0 Submission September 2012 Jeongki Kim, LG ElectronicsSlide 1 System information update procedure for 11 ah Date: 2012-09-17.

Doc.: IEEE /1093r0 Submission September 2012 Jeongki Kim, LG ElectronicsSlide 1 System information update procedure for 11 ah Date:
Doc.: IEEE 802.11-12/1089r0September 2012 Submission Qi Wang, BroadcomSlide 1 Frame Classification Based on MAC Header Content Date: 2012-09-13 Authors:

Doc.: IEEE /1089r0September 2012 Submission Qi Wang, BroadcomSlide 1 Frame Classification Based on MAC Header Content Date: Authors:
Submission doc.: IEEE 802.11-12/0656r1 Slide 1Panasonic September 2012 Extended Sleep mode for battery powered STAs Date: 2012-09-07 Authors: NameAffiliationsAddressPhoneEmail.

Submission doc.: IEEE /0656r1 Slide 1Panasonic September 2012 Extended Sleep mode for battery powered STAs Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-12/0830r0 Submission July 2012 Yongho Seok, LG ElectronicsSlide 1 NDP Probing Date: 2012-07-12 Authors: NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /0830r0 Submission July 2012 Yongho Seok, LG ElectronicsSlide 1 NDP Probing Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-12/0869r0 SubmissionJae Seung Lee, ETRISlide 1 Active Scanning for 11ah Date: 2012-07-13 July 2012 Authors: NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /0869r0 SubmissionJae Seung Lee, ETRISlide 1 Active Scanning for 11ah Date: July 2012 Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-13/0026r0 Submission January 2013 Yongho Seok, LG ElectronicsSlide 1 Security Procedure for Long Sleeper Date: 2013-01-13 Authors: NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /0026r0 Submission January 2013 Yongho Seok, LG ElectronicsSlide 1 Security Procedure for Long Sleeper Date: Authors: NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-13/0519r0 SubmissionSlide 1 Speed Frame Exchange Using NDP Frames Date: 2013-05-11 Authors: Shoukang Zheng, I2R May 2013 NameAffiliationsAddressPhoneEmail.

Doc.: IEEE /0519r0 SubmissionSlide 1 Speed Frame Exchange Using NDP Frames Date: Authors: Shoukang Zheng, I2R May 2013 NameAffiliationsAddressPhone .
Doc.: IEEE 802.11-13/0061r0 Submission Jan 2013 Hongyuan Zhang, et. Al.Slide 1 Receiver Sensitivity Levels Date: 2013-01-14 Authors:

Doc.: IEEE /0061r0 Submission Jan 2013 Hongyuan Zhang, et. Al.Slide 1 Receiver Sensitivity Levels Date: Authors:
Doc.: IEEE 802.11-12/1333r0 Submission November 2012 Sameer Vermani, Qualcomm Mandatory Optional PHY Features for 11ah Date: 2012-11-12 Authors: Name AffiliationsAddressPhoneemail.

Doc.: IEEE /1333r0 Submission November 2012 Sameer Vermani, Qualcomm Mandatory Optional PHY Features for 11ah Date: Authors: Name AffiliationsAddressPhone .

Similar presentations

Ads by Google