Patent ID: 7389099

Claim:
In a radio receiver, a method of canceling interference from a first user signal received in a combined signal that includes a contribution from a first user and a second user, wherein the first user signal is a high power signal, and the second user signal is a low power signal relative to the first user signal, said method comprising the steps of: determining whether the first user signal was correctly received, wherein the first user signal includes a cyclic redundancy check (CRC) checksum, and the step of determining whether the first user signal was correctly received includes determining whether the CRC checksum is correct; and removing the contribution of the first user signal from the received combined signal only upon determining that the first user signal was correctly received, wherein the CRC checksum includes a plurality of bits, each bit having a value, and the step of removing the contribution of the first user signal includes: hard-subtracting the contribution of the first user signal from the received signal if all of the bits of the checksum are correct; and soft-subtracting the contribution of the first user signal from the received signal if some of the bits in the checksum are not correct.