VESTIGIAL IDENTIFICATION FOR CO-CHANNEL INTERFERENCE IN CELLULAR COMMUNICATIONS

摘要

A vestigial identification system is provided for transmitting information in a cellular communications network employing frequency reuse. The vestigial identification system enables a receiver to detect both bit errors and interfering messages to avoid call disruption. A composite parity check (55) is produced by encoding message data (53) and a site identifier (54) via an encoder (50). A transmitter conveys a code word (58), formed at a code word generator (51) by combining the composite parity check (57) with the message data (56), to a receiver. At the receiver, an encoder (61) forms an error detection parity check (67) by encoding both the message data from the code word (65) and the site identifier (66). An error detector (62) compares the composite parity check (68) from the transmitted code word to the error detection parity check (69), and generates an error (70) if the parity checks are not identical to one another, enabling rejection of the message by the receiver.