Abstract:
Apparatus employed by a remote unit wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtracting is despread as data for that channel.
Abstract:
A spread spectrum base station receives a spread spectrum signal. The spread spectrum signal includes a reference signal and a message signal. The message signal has message data. The reference signal is detected within the received combined spread spectrum signal. The message data of the message signal is recovered using the reference signal. A spread spectrum base station produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. The combined signal is transmitted as the combined spread spectrum signal.
Abstract:
A monetary amount is allocated to a user of a radio unit. The user initiates a wireless telephone call using the radio unit to engage in a local transaction other than for wireless telephone services. The user is permitted to engage in the local transaction based on in part the allocated monetary amount. A monetary amount associated with the local transaction is debited from the allocated monetary amount.
Abstract:
A base subunit receives a signal over a first frequency. A plurality of despread voice signals are produced using the received signal. The despread signals and a voice signal generated at the base subunit are combined. The combined signal is mixed with a chipping sequence. The mixed combined signal is transmitted at a second frequency.
Abstract:
A base station is in a spread spectrum code division multiple access (CDMA) communication system with co-exists with a diverse system of existing users. The diverse system selectively utilizes various frequencies within a selected range of frequencies. The base station generates a plurality of spread spectrum CDMA data signals using pseudo random chip code sequences. The spread data signals encompass the selected range. The base station notch filters the spread data signals at frequencies within the selected range used by the diverse system. The notch filtered spread data signals are transmitted in CDMA cellular radio communications.
Abstract:
Apparatus employed by a base station wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtracting is despread as data for that channel.
Abstract:
A spread spectrum base station generates a plurality of spread spectrum signals. The spread spectrum signals encompass a selected frequency spectrum. Frequencies within the selected frequency spectrum having a high microwave power are detected. The spread spectrum signals are notch filtered at the detected frequencies. The notch filtered spread spectrum signals are transmitted.
Abstract:
A removable card is used in radio units. The card comprises a memory for storing telephone numbers associated with an owner of the card. One of the telephone numbers is a telephone number of the owner. The memory is configured so that upon insertion of the card in a radio unit, that radio unit receives calls associated with the owner telephone number stored on the card.
Abstract:
A spread spectrum base station has a set of phased array antennas for receiving a spread spectrum signal containing a plurality of channels. The base station outputs timed version of the received signal. Each timed version is associated with a respective one out of said set of phased array antennas. A plurality of despread signals is produced by despreading each timed version of the received signal using chip code sequences associated with the plurality of channels and combining the despread signals as a combined despread signal. A magnitude of the combined despread signal for obtaining a present a prior magnitude is determined. The present magnitude is compared with the prior magnitude. A delay associated with the timed versions in response to the comparison is adjusted, so antenna beams associated with the set of phased array antennas are steered towards components of the spread spectrum signal with a highest combined magnitude.
Abstract:
A wireless communication system has spread spectrum and narrow band users. A selected base station produces a spread spectrum signal for transmission in a selected sector of the base station. The produced spread spectrum signal notch filters at frequencies. These frequencies are used by narrow band users located in the selected sector and sectors of base stations other than the selected base station adjacent tot he selected sector. The notch filtered signal is transmitted in the selected sector.