Title:
【発明の名称】線形変調信号用等化器
Document Type and Number:
Japanese Patent JP2697405
Kind Code:
B2
Abstract:
This invention relates to an equalizer for equalization of a linear modulated signal received in blocks or frames over a radio channel. The impulse response of the channel is estimated during training sequences before and after a frame and interpolation is used to estimate the impulse response at each point in the frame. From this, the coefficients of an equalizer (24, 26) are calculated for equalising the signal. Various further improvements are described. The technique is particularly applicable to land mobile radio systems using 16 QAM or other linear modulation schemes.
Inventors:
Salomon Surfati
Application Number:
JP25273991A
Publication Date:
January 14, 1998
Filing Date:
September 05, 1991
Export Citation:
Assignee:
MOTOROLA INCORPORATED
International Classes:
H03H15/00; H03H17/00; H03H21/00; H04B7/005; H04L25/02; H04B3/10; H04L25/03; H04L27/38; (IPC1-7): H04B7/005; H03H21/00; H04B3/10; H04L27/38
Other References:
【文献】米国特許5293401(US,A)
【文献】英国公開2247812(GB,A)
【文献】英国公開2247812(GB,A)
Attorney, Agent or Firm:
Shinsuke Onuki (1 person outside)