TY - GEN
T1 - Interference resistant scalable video transmission over DS-CDMA channels
AU - Bansal, Manu
AU - Pynadath, Elizabeth S.
AU - Kondi, Lisimachos P.
AU - Matyjas, John D.
AU - Medley, Michael J.
AU - Reichhart, Stephen P.
AU - Turck, Kurt A.
PY - 2005
Y1 - 2005
N2 - In this work, we demonstrate the interference mitigation capabilities of the auxiliary vector (AV) receiver for scalable video transmission over direct-sequence code division multiple access (DS-CDMA) systems using a hardware testbed. The proposed receiver design is also compared to the conventional RAKE matched-filter (RAKE-MF) and minimum variance distortionless response (MVDR) receivers. The DS-CDMA video data stream is transmitted over an RF channel under "real world" Rayleigh-faded multipath channel conditions, emulating open and/or urban battlefield environments. The state-of-the-art Agilent E4438C Vector Signal Generator and Baseband Studio Fader is used to provide a configurable "real time" RF channel. In this work, the "foreman" video sequence is source encoded using an MPEG-4 compatible video codec and channel-coded using rate-compatible punctured convolutional (RCPC) codes. After spreading and modulating, the resultant bitstream is transmitted over a user-defined Agilent wireless channel emulation. Upon chip-matched filtering and sampling at the chip-rate on a hardware testbed, the received data are despread/demodulated using the AV, RAKE-MF and MVDR receivers and, subsequently, channel and source decoded. The resultant video clips exemplify that the AV receiver outperforms the MVDR and the RAKE-MF receiver counterparts under a wide range of rates and channel conditions.
AB - In this work, we demonstrate the interference mitigation capabilities of the auxiliary vector (AV) receiver for scalable video transmission over direct-sequence code division multiple access (DS-CDMA) systems using a hardware testbed. The proposed receiver design is also compared to the conventional RAKE matched-filter (RAKE-MF) and minimum variance distortionless response (MVDR) receivers. The DS-CDMA video data stream is transmitted over an RF channel under "real world" Rayleigh-faded multipath channel conditions, emulating open and/or urban battlefield environments. The state-of-the-art Agilent E4438C Vector Signal Generator and Baseband Studio Fader is used to provide a configurable "real time" RF channel. In this work, the "foreman" video sequence is source encoded using an MPEG-4 compatible video codec and channel-coded using rate-compatible punctured convolutional (RCPC) codes. After spreading and modulating, the resultant bitstream is transmitted over a user-defined Agilent wireless channel emulation. Upon chip-matched filtering and sampling at the chip-rate on a hardware testbed, the received data are despread/demodulated using the AV, RAKE-MF and MVDR receivers and, subsequently, channel and source decoded. The resultant video clips exemplify that the AV receiver outperforms the MVDR and the RAKE-MF receiver counterparts under a wide range of rates and channel conditions.
UR - https://www.scopus.com/pages/publications/33847368510
U2 - 10.1109/MILCOM.2005.1605750
DO - 10.1109/MILCOM.2005.1605750
M3 - Conference contribution
SN - 0780393937
SN - 9780780393936
T3 - Proceedings - IEEE Military Communications Conference MILCOM
BT - MILCOM 2005
T2 - MILCOM 2005: Military Communications Conference 2005
Y2 - 17 October 2005 through 20 October 2005
ER -