Intel Corporation

Vladimir Kravtsov

Michael Genossar

Alexander A Maltsev

Artyom Lomayev

Carlos Cordeiro

Assaf Yaakov Kasher

Yuval Shamuel Lomnitz

Tom Harel

Iaroslav P Gagiev

Yaroslav P Gagiev

Alexey Vladimirovich Khoryaev

Nageen Himayat

Shilpa Talwar

Claudio Da Silva

Michael Kerner

Hua Yang

Amir Israel Rubin

Alexander Maltsev, Jr

Ayelet Doron

Maxim Greenberg

Clark Chen

Elias Nemer

Li Li

Yaniv Kaver

Uriel Lemberger

Yaakov Ben-Bassat

Homgmei Sun

This disclosure describes methods, apparatus, and systems related to a channel estimation field (CEF) for various standards, for example, the 802.11ay standard, for single carrier (SC) MIMO channel estimation. In one embodiment, the CEF can use Golay complementary sequences. In another embodiment, the Golay complementary sequences can be defined similar to Golay complementary sequences definitions that can be found in various legacy standards, for example, the legacy 802.11ad standard. Various embodiments of the disclosure can allow channel estimation in the time domain and/or frequency domain, having small or negligible inter-stream interference. Various embodiments of the disclosure can enable an extendable structure for various M&#xd7;N MIMO configurations, where M and N are positive integers.

Channel estimation fields for wireless networks

For example, a station may generate a plurality of space-time streams including at least a first space-time stream and a second space-time stream, the first space-time stream including, in a first interval, a first data sequence followed by a first Guard Interval (GI) sequence, the first space-time stream comprising, in a second interval subsequent to the first interval, a second data sequence followed by the first GI sequence, the second space-time stream comprising, in the first interval, a sign-inverted and time-inverted complex conjugate of the second data sequence followed by a second GI sequence, the second space-time stream comprising, in the second interval, a time-inverted complex conjugate of the first data sequence followed by the second GI sequence; and transmit a Single Carrier (SC) Multiple-Input-Multiple-Output (MIMO) transmission based on the plurality of space-time streams.

Apparatus, system and method of communicating a single carrier (SC) transmission

This disclosure describes methods, devices, and systems related to interleaving and deinterleaving symbols used in single carrier modulation and coding schemes. A device is disclosed comprising at least one memory storing computer-executable instructions, and at least one processor configured to access the at least one memory. The at least one processor is further configured to execute the computer-executable instructions to: receive a source data bit string from the at least one memory, scramble the source data bit string, parse the scrambled source data bit string into a plurality of segments, assign a portion of the plurality of segments to a Single Carrier-Block (SC-BLK), and encode the portion of the plurality of segments into a code word, wherein the code word comprises a plurality of bit groups, and each bit group comprises one or more bits. The at least one processor is further configured to determine a number of modulation symbols based at least in part on group size; map each of the plurality of bit groups to a corresponding modulation symbol; group the modulation symbols into an interleaved symbol block associated with the SC-BLK; group the plurality of modulation symbols in the interleaved symbol block into a second code word that corresponds to the first code word; and transmit a packet comprising the interleaved symbol block.

Interleaving and deinterleaving source data for single carrier modulation and coding schemes

Some demonstrative embodiments include apparatuses, devices, systems and methods of communicating a Single Carrier (SC) Space Time Block Coding (STBC) transmission. For example, a station may generate a plurality of space-time streams including at least a first space-time stream and a second space-time stream, the first space-time stream including, in a first interval, a first data sequence followed by a first Guard Interval (GI) sequence, the second space-time stream including, in the first interval, a second data sequence followed by a second GI sequence, the first space time stream comprising, in a second interval subsequent to the first interval, a sign-inverted and time-inverted complex conjugate of the second data sequence followed by the first GI sequence, the second stream including, in the second interval, a time-inverted complex conjugate of the first data sequence followed by the second GI sequence; and transmit a SC STBC transmission based on the plurality of space-time streams.

Apparatus, system and method of communicating a single carrier (SC) space time block code (STBC) transmission

Described herein are technologies related to an implementation of noise power estimation in a receiver of a device.

Method for noise power estimation

An apparatus may comprise a signal mapper to map a pre-emphasized signal to sub-carriers symmetrically about DC, and a peak-to-average-power reduction (PAPR) module arranged to receive a pre-emphasized signal and treat the pre-emphasized signal so as to reduce PAPR in a transmit signal sent from the transmitter. Other embodiments are described and claimed.

System and method of improving power efficiency in wireless communication system

A device includes an input configured to receive a signal, wherein the signal includes at least one data block and a plurality of signal parts known to the device, a first signal part at the beginning of the data block and a second signal part at the end of the data block. The device further includes an equalizer and a pre-equalizer coupled between the input and the equalizer, wherein the pre-equalizer is configured to estimate a phase shift between the plurality of signal parts.

Device and method for channel estimation and signal demodulation

In a wireless, OFDM system, phase noise may be mitigated through the use of an interleaver that is designed to distribute coded block bits across subcarriers of multiple OFDM symbols. Doing so decreases the non-stationary properties of the noise. Such an interleaver may be a rectangular interleaver that maps each block to a different subcarrier to create frequency diversity and to a different OFDM symbol, to create time diversity. One exemplary method of interleaving the symbols is to place a first symbol at row X and column Y of the interleaver. The next symbol is placed in row X+1 and column Y+1. The result of such an interleaving process is a great reduction in the block error rate.

Method and apparatus for inter-carrier interference mitigation in phase noise limited wirelss communiction systems

According to various embodiments, methods, apparatuses and systems are provided to allow a transmitter to reduce the Peak to Average Power Ratio (PAPR) of a modulated signal by applying a pre-emphasis filter to the signal, clipping the pre-distorted signal to reduce the PAPR, and applying a de-emphasis filter to the clipped signal to reduce the spectral leakage caused by the clipping. Other embodiments may be disclosed or claimed.

Method for peak to average power ratio reduction

A noise estimation filter for an orthogonal frequency-division multiplexed (OFDM) system can include a filter bank module, a coefficient squaring module, and a summing module. The filter bank module can multiply a unitary vector by an OFDM signal vector to generate scalar products of the OFDM signal vector. The coefficient squaring module can square the scalar products and weight the scalar products to generate a plurality of weighted single estimates. The coefficient squaring module can include a squaring module for squaring the scalar product to generate a plurality of single estimates and a coefficient multiplication module for weighting each of the single estimates with a noise coefficient forming a plurality of weighted single estimates. The summing module can sum the weighted single estimates to generate a noise and interference power estimate.

Noise estimation filter

Embodiments of apparatuses, articles, methods, and systems for efficient generation of a time domain signal in multi-carrier communications are generally described herein. Other embodiments may be described and claimed.

Time domain signal generation

An embodiment of the present invention provides an apparatus, comprising a transceiver configured for OFDM transmissions in frequency-contiguous, hopping, sub-channels.

Method and apparatus adapted for localized hopping OFDMA and power efficient OFDMA multiplexing

A method for managing and allocating radio resources (RRMA method) of multiple radio resource types to subscriber stations is disclosed. The RRMA method includes bandwidth partitioning, into parts comprising 'slots' with a given reuse pattern, a selection rule, to select a 'cell, reuse pattern' pair serving each user, and an allocation rule, for distributing to each user an appropriate number of bandwidth slots from the selected &#x201c;cell, reuse pattern&#x201d; pair. After an adaptation period, the method reaches a desired fairness, while simultaneously reaching a maximal mean throughput, possible under this fairness. For big networks, the method provides basically decentralized radio resource management. The RRMA method is useful to cellular networks having a single set of orthogonal sub-channels (frequency/time slots) being reused by all network cells, such as time division multiple access (TDMA), orthogonal frequency division multiple access (OFDMA), or OFDMA/TDMA cellular systems. Particularly, the method is applicable in fractional frequency reuse cellular networks.

Adaptive frequency reuse method of radio resources management and allocation

Some embodiments of the invention provide devices, systems and methods of noise identification and cancellation. For example, an apparatus in accordance with an embodiment of the invention includes: a characterizer to estimate a non-linear mutual relation between: a characteristic of an incoming interference signal, and an estimated portion of noise level in an incoming signal-of-interest caused by the incoming interference signal; and a noise canceller to reduce an effect of the interference signal on the signal-of-interest by applying a noise reduction algorithm based on said non-linear mutual relation.

Growing community of inventors

Jerusalem, Israel

Vladimir Kravtsov