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: An improvement for television and Internet channel distribution. A plurality of P programs are to be sent over the communications medium, using the multiplicity of channels. Each program has digitized-compressed content. For each program, a set of packets is generated and modulated in a form suitable for transmission over a multiplicity of channels. The packets are interleaved, depending on priority, and then sent over the multiplicity of channels. Assuming equal priority, a first set of packets of the P programs is sent, a second set of packets from the P programs is next sent, and a third set of packets from the P programs is then sent, over the multiplicity of channels. Each set of packets of the first program, the second program, and the third program, is received at a first, second and third set top box, respectively. Display of the first, second and third program is initiated upon receipt of the first, second, second and third set of packets of the first, second and third program, respectively.

Abstract: A system and method for transmitting a plurality of spread-spectrum signals over a communications channel having fading. The plurality of spread-spectrum signals are radiated by a plurality of antennas, with each antenna preferably spaced by one-quarter wavelength. A plurality of receiver antennas receive the plurality of spread-spectrum signals and a plurality of fading spread-spectrum signals. Each receiver antenna is coupled to a plurality of matched filters having a respective plurality of impulse responses matched to the chip-sequence signals of the plurality of spread-spectrum signals. A RAKE and space-diversity combiner combines, for each respective chip-sequence signal, a respective plurality of detected spread-spectrum signals and a respective multiplicity of detected-multipath-spread-spectrum signals, to generate a plurality of combined signals. The symbol amplitudes can be measured and erasure decoding employed to improve performance.

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 cellular phone includes a first removable subscriber identification card which has a microprocessor and memory that stores subscriber identification information. The cellular phone also includes a card interface, a controller, that generates a personal access number from the subscriber identification information, and a transmitter that transmits the first personal access number to a wireless communication system.

Abstract: An improvement for television channel distribution having digitized-compressed content. The digitized-compressed content are security encoded with a first Gold-code signal. A code-adjust signal and a header are multiplexed to the encoded-digitize-compressed content, to generate a packetized-compressed-video signal. At a set-top box, the header and the code-adjust signal are read from the packetized-compressed-video signal. From the code-adjust signal read from the packetized-compressed-video signal, a second Gold-code signal is generated at the set-top box, synchronized from the code-adjust signal. The encoded-digitized-compressed content are decoded with the second Gold-code signal, thereby generating digitized-compressed content. The digitized-compressed content is decompressed as content.

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: An improvement to a spread-spectrum receiver having a matched filter. A symbol sampler samples at the symbol time TS, a symbol sample from the matched filter. A noise sampler samples at a plurality of chip times kTC, but not at the symbol time TS, a plurality of noise samples from the matched filter. An estimator or low-pass filter estimates the plurality of noise samples from the symbol sampler, to generate a noise estimate. A combiner subtracts the noise estimate from the symbol sample, thereby generating a comparison signal. A magnitude device determines a magnitude of the comparison signal. A comparator compares the magnitude of the comparison signal to the threshold voltage, thereby generating the erasure signal. An erasure decoder erasure decodes the input data using the erasure signals from the erasure detector.

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: An improvement to a spread-spectrum code-division-multiple-access system, using a channel sounding signal from a base station (BS) to provide initial transmitter power levels for remote stations (RS). The base station transmits BS-spread-spectrum signals at a first frequency and receives RS-spread-spectrum signals, which are transmitted by the remote stations at the second frequency. The base station transmits a BS-channel-sounding signal at the same carrier frequency being used by the remote stations. The bandwidth of the BS-channel-sounding signal is much less than the bandwidth of the BS-channel-spread-spectrum signal. Each remote station tracks the BS-channel-sounding signal, for adjusting the initial RS-power level.

Abstract: A headend controller selects a multiplicity of sub-communications channels for transmission through a communications channel to a remote-subscriber unit. The headend controller sends channel information indicating which channels from the plurality of sub-communications channels are the first multiplicity of sub-communications channels The remote-subscriber unit receives the first channel information and sets receiver means for receiving the first multiplicity of sub-communications channels from the headend. The headend demultiplexes the particular VOD or Internet content signal into data streams, and sends the data streams over the multiplicity of sub-communications channels, respectively, to the remote-subscriber unit. The remote-subscriber unit receives the data streams from the first multiplicity of sub-communications channels, and multiplexes the data streams for reassembling the particular VOD or Internet content signal.

Abstract: A high data rate, high processing gain, direct sequence spread spectrum system that transmits a BPSK or QPSK signal. The data which are collected and stored and forwarded N bits at a time by transmitting one of 2N pseudo random waveforms every time N bits are collected. During acquisition, product devices multiply a received spread-spectrum signal by a header chip-sequence signal. After acquisition, the product device multiply the received spread-spectrum signal by 2N chip-sequence signals to generate products, with each chip-sequence signal of the chip-sequences signals being different from other chip-sequence signals of the chip-sequence signals. Integrators integrate the products thereby forming 2N correlators, and a comparator selects a largest value from the integrators. The largest value is decoded into N bits of data.

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: An improvement to a spread-spectrum base station receiver having a matched filter. A symbol sampler samples at the symbol time TS, a plurality of symbol samples from the matched filter. A relative-signal-level decoder decodes the plurality of received-symbol samples, thereby generating a plurality of decoded-symbol samples. A noise sampler samples at a plurality of chip times kTC, but not at the symbol time TS, a plurality of noise samples from the matched filter, before, after, or a combination of before and after, a symbol sample. An estimator processes the plurality of noise samples. The erasure detector detects for each decoded-symbol sample from the plurality of decoded-symbol samples and from the plurality of noise samples, an erasure condition for the corresponding decoded-symbol sample, and thereby generates an erasure signal. An erasure decoder erasure decodes the input data using the erasure signals from the erasure detector.

Abstract: An improvement to a spread-spectrum, code-division-multiple-access (CDMA) cellular system having multiple circuit-switched (CS) remote stations, multiple packet-switched (PS) remote stations and a base station per cell. The CS-remote station transmits a spread-spectrum CDMA signal, with a chip rate of fc, with a CS-symbol rate of fb, and with a power level PCS. The PS-remote station transmits a spread-spectrum CDMA signal with the chip rate of fc, PS-symbol rate fp, and with a power level PPS. The power level PPS from the PS-remote station and the power level PCS from the CS-remote station are related by a relation of the CS-symbol rate and the PS-symbol rate to efficiently share system capacity.

Abstract: A system and method for transmitting a plurality of spread-spectrum signals over a communications channel having fading. The plurality of spread-spectrum signals are radiated by a plurality of antennas, with each antenna preferably spaced by one-quarter wavelength. A plurality of receiver antennas receive the plurality of spread-spectrum signals and a plurality of fading spread-spectrum signals. Each receiver antenna is coupled to a plurality of matched filters having a respective plurality of impulse responses matched to the chip-sequence signals of the plurality of spread-spectrum signals. A RAKE and space-diversity combiner combines, for each respective chip-sequence signal, a respective plurality of detected spread-spectrum signals and a respective multiplicity of detected-multipath-spread-spectrum signals, to generate a plurality of combined signals. The symbol amplitudes can be measured and erasure decoding employed to improve performance.

Abstract: An improvement for obtaining synchronization to a chip-sequence signal. The chip-sequence signal has a plurality of chips, and is embedded in a spread-spectrum signal. A shift register shifts or cycles a replica or delayed replica of the chip-sequence signal. The shift register has a plurality of taps, which correspond to the plurality of chips. A plurality of comparators compares the chip-sequence signal embedded in the spread-spectrum signal with the replica of the chip-sequence signal stored in the shift register. From the comparison, the plurality of comparators generates, for each tap of the shift register, a plurality of compared values at each comparator of the plurality of comparators. A plurality of counters up and down counts, from each comparator, a respective plurality of compared values. The respective plurality of compared values appears at an output of a respective comparator of the plurality of comparators. The plurality of counters thereby generates a plurality of totals, respectively.

Abstract: A distributed network, spread-spectrum system comprising a plurality of remote stations and a plurality of nodes. One or more hub node(s) connect(s) to a central telephone office. A node's spread-spectrum transceiver communicates, using packets having spread-spectrum modulation, over radio waves, with the plurality of remote stations. Each packet has a source address and a destination address, and may have other information such as a header, start of message, end of message, flow-control information, forward error correction, and message data. A store-and-forward subsystem stores and forwards one or more packets to and from the remote station. The store-and-forward subsystem stores and forwards the one or more packets to and from another node in the plurality of nodes. A flow-control subsystem controls the store-and-forward subsystem, to store each packet arriving at the spread-spectrum transceiver.

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: An improvement for obtaining synchronization to a chip-sequence signal. The chip-sequence signal has a plurality of chips, and is embedded in a spread-spectrum signal. A set of M shift registers stores a replica or delayed replica of the chip-sequence signal. Each shift register has a plurality of taps, which correspond to the plurality of chips. A plurality of comparators compares, with a delay of 1/M chip duration per shift register, the chip-sequence signal embedded in the spread-spectrum signal with the replica of the chip-sequence signal stored in the set of M shift registers. From the comparison, the plurality of comparators generates, for each tap of the shift register, a plurality of compared values at each comparator of the plurality of comparators. A plurality of counters up and down counts, from each comparator, a respective plurality of compared values. The respective plurality of compared values appears at an output of a respective comparator of the plurality of comparators.