## Re: [Aironet] Re : Aironets power & sensitivity

 Re: [Aironet] Re : Aironets power & sensitivity From: Jean-Pierre Ebert - 2000-02-18 12:21:11 ```Gavin D Holland wrote: > > On a slightly different note, does anyone know of a good reference > for calculating theoretical (BER / Eb/No) curves for the modulation > formats and rates used in 802.11 (DBPSK, DQPSK), 802.11b (CCK), and > 802.11a (OFDM w/(BPSK, QPSK, 16-QAM, 64-QAM)). > > -Gavin Hi Gavin, I can help for the DBPSK and DQPSK modulation: See section II in my following paper: http://www-tkn.ee.tu-berlin.de/bibl/ours/momuc99.ps.gz To compute the BER(Eb/No) for a AWGN channel use the formula: BER= 1/2 * e^(-Eb/No) (Difference PSK: There is no difference for DBPSK and DQPSK. This is the standard formula, unfortunately I have no english reference by hand. Try the communication theory bible from John Proakis, it should be in there. I can not help (at the moment) for CCK and the OFDM stuff. In particular OFDM seems to be really complex. If there is somebody in the mailing list who could help here (perhaps someone from Aironet), I would very appreciate help or a pointer to literature to derivate the equation. I also try to solve that by my own with some help from the my communication theory colleages. Let you know what I have as soon it is available. JP ```

 Re: [Aironet] Re : Aironets power & sensitivity From: Jean-Pierre Ebert - 2000-02-18 12:21:11 ```Gavin D Holland wrote: > > On a slightly different note, does anyone know of a good reference > for calculating theoretical (BER / Eb/No) curves for the modulation > formats and rates used in 802.11 (DBPSK, DQPSK), 802.11b (CCK), and > 802.11a (OFDM w/(BPSK, QPSK, 16-QAM, 64-QAM)). > > -Gavin Hi Gavin, I can help for the DBPSK and DQPSK modulation: See section II in my following paper: http://www-tkn.ee.tu-berlin.de/bibl/ours/momuc99.ps.gz To compute the BER(Eb/No) for a AWGN channel use the formula: BER= 1/2 * e^(-Eb/No) (Difference PSK: There is no difference for DBPSK and DQPSK. This is the standard formula, unfortunately I have no english reference by hand. Try the communication theory bible from John Proakis, it should be in there. I can not help (at the moment) for CCK and the OFDM stuff. In particular OFDM seems to be really complex. If there is somebody in the mailing list who could help here (perhaps someone from Aironet), I would very appreciate help or a pointer to literature to derivate the equation. I also try to solve that by my own with some help from the my communication theory colleages. Let you know what I have as soon it is available. JP ```
 Re: [Aironet] Re : Aironets power & sensitivity From: Gavin D Holland - 2000-02-18 16:02:17 ```Thanks Jean-Pierre, If I find out anything on CCK or OFDM, I'll post it. -Gavin >Gavin D Holland wrote: >> >> On a slightly different note, does anyone know of a good reference >> for calculating theoretical (BER / Eb/No) curves for the modulation >> formats and rates used in 802.11 (DBPSK, DQPSK), 802.11b (CCK), and >> 802.11a (OFDM w/(BPSK, QPSK, 16-QAM, 64-QAM)). >> >> -Gavin >Hi Gavin, > >I can help for the DBPSK and DQPSK modulation: > >See section II in my following paper: >http://www-tkn.ee.tu-berlin.de/bibl/ours/momuc99.ps.gz >To compute the BER(Eb/No) for a AWGN channel use the formula: > >BER= 1/2 * e^(-Eb/No) (Difference PSK: There is no difference for DBPSK >and DQPSK. >This is the standard formula, unfortunately I have no english reference >by hand. Try the >communication theory bible from John Proakis, it should be in there. > >I can not help (at the moment) for CCK and the OFDM stuff. In particular >OFDM seems to be really complex. >If there is somebody in the mailing list who could help here (perhaps >someone from Aironet), >I would very appreciate help or a pointer to literature to derivate the >equation. > >I also try to solve that by my own with some help from the my >communication theory colleages. >Let you know what I have as soon it is available. > >JP > ```