Presentation	1998/9/18 Experiments on Adaptive Transmit Power Control with Outer Loop for W-CDMA Using Concatenated Channel Coding K. Okawa, K. Higuchi, H. Andoh, M. Sawahashi, F. Adachi,
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Abstract(in English)	In this paper, we present an outer loop transmit power control(TPC) method for high bit rate data transmission using concatenated channel coding in W-CDMA mobile radio, and investigate the performance by laboratory experiments. In this outer loop TPC, the target SIR is controlled by keeping the frame error rate(FER_)after inner decoding constant to achieve constant received quality after outer decoding irrespective of the channel conditions. From the experimental results using hardware fading simulator, it is clarified that FER_ after outer decoding can be controlled to be almost constant from slow to fast fading up to 480 Hz, and BER_ after outer decoding can also be controlled to be within the fluctuation of one-digit(in this case, the target SIR is controlled within the range of 4.5 dB). Moreover, it is also shown that the target SIR can be minimized when the step size of inner loop and outer loop are Δ_=+/-1.0 dB and Δ_=+/-0.5 dB, respectively, and as a result, that multiple access interference(MAI) can be minimized.
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Keyword(in English)	Mobile radio / DS-CDMA / Transmit power control / Outer loop / Concatenated channel coding
Paper #	RCS98-93
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Conference Information
Committee	RCS
Conference Date	1998/9/18(1days)
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Paper Information
Registration To	Radio Communication Systems (RCS)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Experiments on Adaptive Transmit Power Control with Outer Loop for W-CDMA Using Concatenated Channel Coding
Sub Title (in English)
Keyword(1)	Mobile radio
Keyword(2)	DS-CDMA
Keyword(3)	Transmit power control
Keyword(4)	Outer loop
Keyword(5)	Concatenated channel coding
1st Author's Name	K. Okawa
1st Author's Affiliation	Wireless Laboratories, NTT Mobile Communications Network, Inc.()
2nd Author's Name	K. Higuchi
2nd Author's Affiliation	Wireless Laboratories, NTT Mobile Communications Network, Inc.
3rd Author's Name	H. Andoh
3rd Author's Affiliation	Wireless Laboratories, NTT Mobile Communications Network, Inc.
4th Author's Name	M. Sawahashi
4th Author's Affiliation	Wireless Laboratories, NTT Mobile Communications Network, Inc.
5th Author's Name	F. Adachi
5th Author's Affiliation	Wireless Laboratories, NTT Mobile Communications Network, Inc.
Date	1998/9/18
Paper #	RCS98-93
Volume (vol)	vol.98
Number (no)	273
Page	pp.pp.-
#Pages	7
Date of Issue