Presentation 1993/10/29
Countermeasure against Near-Far Problem Using Unknown Sequence Estimator
Masakazu Okubo, Masao Nakagawa,
PDF Download Page PDF download Page Link
Abstract(in Japanese) (See Japanese page)
Abstract(in English) Near-far problem is one of the big problems in spread spectrum communications.Conventionally as the countermeasures against near- far problem such methods as transmission power control and crosscorrelation cancellation have been proposed.However,the former can not be used in a network without base station and the later is used only under the condition that a receiver already knows the spread sequences of interfering signals.Therefore,we would like to propose the interference cancellation system whatever the receiver doesn′t know the interfering spread sequence s.It can be realized by the estimation of the unknown spread sequence of the interference,making a replica of the interfering signal,and the subtraction of the replica from the received signal.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) direct sequence / near-far problem / interference cancellation / unknown sequence estimation
Paper # SST93-48
Date of Issue

Conference Information
Committee SST
Conference Date 1993/10/29(1days)
Place (in Japanese) (See Japanese page)
Place (in English)
Topics (in Japanese) (See Japanese page)
Topics (in English)
Chair
Vice Chair
Secretary
Assistant

Paper Information
Registration To Spread Spectrum Technology (SST)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Countermeasure against Near-Far Problem Using Unknown Sequence Estimator
Sub Title (in English)
Keyword(1) direct sequence
Keyword(2) near-far problem
Keyword(3) interference cancellation
Keyword(4) unknown sequence estimation
1st Author's Name Masakazu Okubo
1st Author's Affiliation Faculty of Science and Technology,Keio University()
2nd Author's Name Masao Nakagawa
2nd Author's Affiliation Faculty of Science and Technology,Keio University
Date 1993/10/29
Paper # SST93-48
Volume (vol) vol.93
Number (no) 309
Page pp.pp.-
#Pages 5
Date of Issue