Method for balancing the ratio Eb/I in a service multiplexing CDMA system and telecommunication systems using same

• US 20020027883A1
• Filed: 08/16/2001
• Published: 03/07/2002
• Est. Priority Date: 04/21/1999
• Status: Active Grant

• Current Assignee: Mitsubishi Electric Corporation
• Original Assignee: Mitsubishi Electric Telecom Europe (Mitsubishi Electric Corporation)
• Inventors: Belaiche, Vincent
• Granted Patent: US 6,545,983 B2
• Time in Patent Office: Days
• US Class Current: 370/252
• CPC Class Codes: H04J 13/00 Code division multiplex systems for frequency hopping H04B1/713
• CPC Class Codes: H04J 3/22 in which the sources have different rates or codes simultaneous speech and digital data or video transmission H04M11/06; see provisional also H04J3/16
• CPC Class Codes: H04L 1/00 Arrangements for detecting or preventing errors in the information received correcting synchronisation H04L7/00
• CPC Class Codes: H04L 1/0009 by adapting the channel coding H04L1/1812 takes precedence
• CPC Class Codes: H04L 1/0025 Transmission of mode-switching indication
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0067 Rate matching H04L1/0013 and H04L1/08 take precedence
• CPC Class Codes: H04L 1/0068 by puncturing
• CPC Class Codes: H04L 1/0071 Use of interleaving interleaving per se H03M13/27
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 5/023 Multiplexing of multicarrier modulation signals multicarrier modulation H04L27/2601

Abstract

The invention relates to a method for configuring a telecommunication system comprising at least one sending entity and one receiving entity between which one and the same link ensures the transmission of several transport channels of different qualities of service. The sending entity performs a rate matching between the various qualities of service, on completion of which the various qualities of service are multiplexed. The matching rate specific to each quality of service is determined on the basis of a first parameter (E_q) representative of the ration Eb/I and of a second parameter (P_q) representative of the maximum puncture rate specific to the quality of service considered.

Claims

1. A method for configuring a telecommunication system that comprises a sending entity and a receiving entity communicating over a plurality of groups of transport channels, said transport channels of one of the groups exhibiting identical ratio of an average energy of a bit to an average energy of the interference (Eb/I), the method comprising:

performing rate matching by the sending entity to ensure transformation of an input block of an initial size (X_i) into an output block of a final size (Y_i) as a function of a given rate matching ratio (Y_i, X_i);

determining from one of said entities a first parameter (E_q) associated with said rate matching ratio (Y_i/X_i) and a second parameter (P_q) associated with a maximum puncture rate (P_q/PBASE);

transmitting at least one of said first (E_q) and second (P_q) parameters from said one entity to another one of said entities; and

calculating by said other entity the final size (Y_i) of the block.