Title:
CODE DIVISION MULTIPLE ACCESS (CDMA) MODEM
Document Type and Number:
Japanese Patent JP2016026443
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a subscriber unit in a code division multiple access (CDMA) system for a spread spectrum communication system, which transmits and receives communication signals including information signals and connection-control signals via transmit and receive channels with first and second pilot code signals in order to enlarge a system capacity.SOLUTION: A CDMA modem comprises: a transmit section 1301; a receive section 1302; a control section 1303 which receives control messages CNTRL used for spread code assignment and spreading, or inverse spreading activation, transmission rate assignment, etc.; and a code generator 1304 for generation of a spread code and an inverse spread code. The receive section 1302 receives r(t). The transmit section 1301 transmits input information and a control signal mi(t) as a spread-spectrum processed user information signal scj(t). The transmit section 1301 receives a global pilot code from the code generator 1304. The spread-processed user information signals are added to other signals and transmitted as CDMA channels over a link.SELECTED DRAWING: Figure 11
Inventors:
LOMP GARY
OZLUTURK FATIH
SILVERBERG AVI
OZLUTURK FATIH
SILVERBERG AVI
Application Number:
JP2015178606A
Publication Date:
February 12, 2016
Filing Date:
September 10, 2015
Export Citation:
Assignee:
INTERDIGITAL TECH CORP
International Classes:
H03K3/84; G06F13/374; H04J13/00; H03H17/02; H04B1/707; H04B1/7075; H04B1/708; H04B1/7085; H04B1/709; H04B1/7093; H04B1/711; H04B7/005; H04B7/216; H04B7/26; H04B15/00; H04B17/00; H04J13/10; H04K1/00; H04L1/00; H04L5/14; H04L7/00; H04L7/033; H04L25/02; H04L27/20; H04L27/233; H04L27/30; H04N1/333; H04W52/04; H04W52/14; H04W52/24; H03H17/06; H04B1/7077; H04B1/7115; H04B1/712; H04J11/00; H04J13/12; H04J13/16; H04L27/00
Attorney, Agent or Firm:
Patent Business Corporation Tani/Abe Patent Office