Initial and Post-Initial Acquisition in the Serial Search Based Noncoherent Multiple Transmit/Receive Antenna Aided DS-CDMA Down

— In this paper we investigate the issues of both initial and post-initial acquisition schemes in the multiple transmit/receive antenna aided DS-CDMA downlink, when communicating over uncorrelated Rayleigh channels. The associated Mean Acquisition Time (MAT) performance trends are characterised as a function of the number of transmit/receive antennas. Furthermore, we characterise both the initial and post-initial acquisition performance as a function of the relevant system parameters. It is demonstrated that in contrast to our expectations, the achievable MAT degrades at low Ec/Io values, except for the case of P = 2 transmit antennas operating in conjunction with R=1 receive antenna over the specific Signal-to-Interference plus Noise Ratio (SINR) per chip (Ec/Io) range considered, as the number of transmit antennas is increased. Ironically, our findings suggest that increasing the number of transmit antennas in a MIMO-aided CDMA system results in combining the low-energy, noise-co...

• Type: Conference
• Year: 2006
• Where: VTC
• Authors: Seung Hwan Won, Lajos Hanzo
• Keywords: Acquisition Schemes, Post-initial Acquisition, Transmit Antennas, VTC 2006