US 7,609,790 B2 · Joint signal demodulation in a low and high data rate channel environment

Abstract

A receiver is capable of demodulating both high data rate and low data rate transmissions. An antenna receives the high and low data rate transmissions, as a received signal. An interference canceling device cancels a contribution of at least one shared/common channel from the received signal, producing a first interference canceled signal. A first data detector for detecting data of one of the high or low data rate transmissions by processing the first interference canceled signal. An interference canceling device for canceling the detected data of the one transmissions from the first interference canceled signal, producing a second interference canceled signal. A second data detector for detecting data of an other of the high or low data rate transmissions from the second interference canceled signal.

Claims13

Dependent claims

A receiver configured to receive a wireless data transmission, the data transmission comprising a low data rate transmission and a high data rate transmission, comprising:

an antenna configured to receive the wireless data transmission as a received vector;
a common/shared channel interference canceller configured to cancel data from at least one shared channel from the received vector to produce an interference cancelled vector;
a downlink physical channel (DPCH) data detector configured to detect the low data rate transmission in the interference cancelled vector;
a DPCH interference canceller configured to subtract the contribution of the low data rate transmission from the interference cancelled vector to produce a DPCH cancelled vector;
a high speed downlink packet access (HSDPA) data detector configured to detect the high data rate transmission from the DPCH cancelled vector.

2 more elements

Dependencies are inferred from the claim text.

Joint signal demodulation in a low and high data rate channel environment

Life of this patent

Joint signal demodulation in a low and high data rate channel environment

Life of this patent

Abstract

Claims13