TY - GEN
T1 - Multiple-antenna post low noise amplifier RF combining
AU - Jo, Kyung Tae
AU - Ko, Young Chai
AU - Park, Chul Gyun
AU - Park, Joun Sup
N1 - Copyright:
Copyright 2010 Elsevier B.V., All rights reserved.
PY - 2009
Y1 - 2009
N2 - In this paper we propose the superheterodyne receiver beamforming architecture called Post-Low Noise Amplifier RF Combining (PLRC) to reduce the power consumption by using the single analog-to-digital converter (ADC). The RF chains in our proposed schemes includes the same number of the low noise amplifier (LNA) and the discrete-level phase shifters as the number of antennas followed by the single chain which consists of combiner, mixer, IF and the analog-to-digital converter (ADC). We propose simple channel estimation techniques based on the codebook stored in the baseband. We show from our some selected simulations that, when the exact phase information is available, the loss of beamforming gain of our proposed PLRC is not significant in terms of both signal-to-noise ratio (SNR) and bit error rate compared to the conventional baseband beamforming techniques while the power consumption of our proposed scheme can be much saved by using the single RF chain and single ADC. In addition, even for the use of the discrete phase level, the performance loss is negligible.
AB - In this paper we propose the superheterodyne receiver beamforming architecture called Post-Low Noise Amplifier RF Combining (PLRC) to reduce the power consumption by using the single analog-to-digital converter (ADC). The RF chains in our proposed schemes includes the same number of the low noise amplifier (LNA) and the discrete-level phase shifters as the number of antennas followed by the single chain which consists of combiner, mixer, IF and the analog-to-digital converter (ADC). We propose simple channel estimation techniques based on the codebook stored in the baseband. We show from our some selected simulations that, when the exact phase information is available, the loss of beamforming gain of our proposed PLRC is not significant in terms of both signal-to-noise ratio (SNR) and bit error rate compared to the conventional baseband beamforming techniques while the power consumption of our proposed scheme can be much saved by using the single RF chain and single ADC. In addition, even for the use of the discrete phase level, the performance loss is negligible.
KW - Beamforming
KW - Equal gain combining
KW - Maximal ratio combining
KW - Noise figure
KW - RF combining
KW - Single RF chain
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U2 - 10.1109/GLOCOMW.2009.5360684
DO - 10.1109/GLOCOMW.2009.5360684
M3 - Conference contribution
AN - SCOPUS:77951167700
SN - 9781424456260
T3 - 2009 IEEE Globecom Workshops, Gc Workshops 2009
BT - 2009 IEEE Globecom Workshops, Gc Workshops 2009
T2 - 2009 IEEE Globecom Workshops, Gc Workshops 2009
Y2 - 30 November 2009 through 4 December 2009
ER -