下世代無線網際網路用的多載波碼域多工收發機之研製--總計畫(2/3)
Date Issued
2003-07-31
Date
2003-07-31
Author(s)
DOI
912219E002022
Abstract
In our previous project we have successfully built a 3GPP WCDMA base station receiver
with smart antenna capability. This project uses the MC-CDMA as the downlink physical layer
technique. This not only can complement our previous work on 3GPP uplink receiver
implementation but also provides a backward-compatible evolutionary next-generation wireless
standard for wide-band wireless internet services.
In the second year, we have proposed a new pilot-based channel estimation algorithm
for the OFDM system and have successfully applied the estimaiot n to adaptive antenna array.
We have also proposed jao int carrier frequency and timing frequency offset estimation
algorithm using a weighted least square techniqueIn. addition, to combat then on-linearity impairment of the transmitter power amplifier, a pre-distortion technique has been implemented
and tested on multi-carrier signals and was shown to be able to reduce the backoff in PA by 4
dB.. Finally, the baseband receiver architecture has beend esigned and detrial circuit design
and FPGA emulation reveal the efficacy of the proposed architecture.
Subjects
MC-CDMA
adaptive array
channel estimation
pre-distortion compensa- tion
synchronization
baseband receiver
Publisher
臺北市：國立臺灣大學電機工程學系暨研究所
Type
report
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