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802.15.4 HRP UWB Setup

Click 802.15.4 HRP UWB in the tree view to display the 802.15.4 HRP UWB setup. To learn about the frame structure and where these settings are applied within that structure, see the 802.15.4 UWB concept topic.

1. General Settings

HRP UWB Mode

Choices: Non-HRP-ERDEV, HRP-ERDEV BPRF, HRP-ERDEV HPRF

Default: Non-HRP-ERDEV

Coupling: Header, PSDU, and STS Settings

Sets the mode for HRP UWB PHY.

Non-HRP-ERDEV: Devices are not HRP-ERDEV.

HRP-ERDEV BPRF: HRP-ERDEV operates at the base pulse repetition frequency mode.

HRP-ERDEV HPRF: HRP-ERDEV operates at the higher pulse repetition frequency mode.

STS Packet Configuration

Choices: 0, 1, 2, 3

Default: 0

STS packet configuration indicates the STS position in the PPDU as well as the position of the RMARKER.

Channel Number

Choices: Channel 0~15

Default: Channel 0

Select the channnel number for 802.15.4 HRP UWB.

Idle Interval (µs)

Range: 0 to 1000 µs

Default: 50 µs

Coupling: Repetition Interval

Enter the idle interval in-between frames in microseconds. When idle interval is set to zero, a continuous waveform will be generated. Use space to split different idle intervals for multi-frame case, the number of space separated values should be less than or equal to the number of frames.

Coupling between Idle Interval and Repetition Interval

Repetition Interval and Idle Interval are coupled with each other. If other waveform parameters stay unchanged, Idle Interval will be updated with the change of Repetition Interval. And vice versa, Repetition Interval will be automatically updated with the change of Idle Interval.

Repetition Interval

Default: 2.909 ms

Coupling: Idle Interval (µs)

Displays the length of a single PPDU frame combined with an idle interval. It will be automatically updated with the change of the waveform setting and Idle Interval.

This value can be configured for your convenience. If other waveform parameters stay unchanged, this parameter reaches its minimum value when Idle Interval is zero.

Coupling between Idle Interval and Repetition Interval

Repetition Interval and Idle Interval are coupled with each other. If other waveform parameters stay unchanged, Idle Interval will be updated with the change of Repetition Interval. And vice versa, Repetition Interval will be automatically updated with the change of Idle Interval.

Bandwidth

Choices:

499.2 MHz for Channel 0~3, 5~6, 8~10, 12~14

1331.2 MHz for Channel 4, 11

1081.6 MHz for Channel 7

1354.97 MHz for Channel 15

Default: 499.2 MHz for Channel 0

Coupling: Channel Number

If Channel Number is 0~3, 5~6, 8~10 or 12~14, Bandwidth is 499.2 MHz. If Channel Number is 7, Bandwidth is 1081.6 MHz.

If Channel Number is 4 or 11, Bandwidth is 1331.2 MHz.

If Channel Number is 15, Bandwidth is 1354.97 MHz.

The bandwidth denotes the 3 dB bandwidth of the HRP UWB pulses.

Customized Header

Choice: On | Off

Default: Off

Coupling: Header Settings

This parameter determines whether to use customized header.

When this feature is on, the customized header will be used. Otherwise, the standard header defined in IEEE 802.15.4z will be used.

2. Header Settings

Code Index

Choices:

Non-HRP-ERDEV: 1~24

HRP-ERDEV BPRF: 9~24

HRP-ERDEV HPRF: 1~32

Default: Code Index = 1

The index of the preamble codes used in the HRP UWB PHY channels

The length 31 code sequences are indexed from 1 to 8. The length 127 code sequences are indexed from 9 to 24. The length 91 code sequences are indexed from 25 to 32.

SYNC Length (PSR) (symbols)

Choices:

Non-HRP-ERDEV: 16, 64, 1024, 4096 symbols

HRP-ERDEV BPRF: 16, 24, 32, 48, 64, 96, 128, 256, 1024 and 4096 symbols

HRP-ERDEV HPRF: 16, 24, 32, 48, 64, 96, 128 and 256 symbols

Default: 64 symbols

The number of symbols in the packet sync sequence.

Delta Length

Choices:

Non-HRP-ERDEV: 4, 16 and 64

HRP-ERDEV BPRF: 4

HRP-ERDEV HPRF: 4, 16 and 64

Default: 16

Coupling: Channel Number and Code Index

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 1~8, Delta Length can be 16 or 64.

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 9~24, Delta Length will be 4.

The length of the delta function. The delta function is used to extend the preamble code to the preamble symbol.

The value of "Delta Length" depends on values of "HRP UWB Mode", "Channel Number" and "Code Index".

SFD#

Choices:

HRP-ERDEV BPRF: 0, 2

HRP-ERDEV HPRF: 1, 2, 3, 4

Default: 2

Selects the SFD sequence

SFD Length (symbols)

Choices for Non-HRP-ERDEV:

8 symbols for the data rate of 850Kb/s, 6.81Mb/s and 27.24Mb/s

64 symbols for the data rate of 110Kb/s

Choices for HRP-ERDEV BPRF and HRP-ERDEV HPRF:

8 symbols when SFD# = 0, 2;

4 symbols when SFD# = 1;

16 symbols when SFD# = 3;

32 symbols when SFD# = 4;

Default for Non-HRP-ERDEV: 64 symbols

Default for HRP-ERDEV BPRF and HRP-ERDEV HPRF: 8 symbols

Coupling: Data Rate

If Data Rate is 850 kb/s, 6.81 Mb/s or 27.24 Mb.s, SFD Length will be 8 symbols.

If Data Rate is 110 kb/s, SFD Length will be 64 symbols.

Read only. Indicates the number of symbols in the SFD.

PHR Bit Rate

Choices:

Non-HRP-ERDEV: 850 kb/s and 110 kb/s

HRP-ERDEV BPRF: 975 kb/s, 7.8 Mb/s

HRP-ERDEV HPRF: 3.9 Mb/s, 7.8 Mb/s, 15.6 Mb/s and 31.2 Mb/s

Default: 110 kb/s

Coupling: Data Rate

If Data Rate is greater than or equal to 850 kb/s, PHR Bit Rate will be 850 kb/s.

If Data Rate is equal to 110 kb/s, PHR Bit Rate will be 110 kb/s.

Indicates the bit rate of PHR.

2. Customized Header Settings

Preamble Code Sequence

Range: maximum is 1024

Default: - 0 0 0 0 + 0 - 0 + + + 0 + - 0 0 0 + - + + + 0 0 - + 0 - 0 0

Coupling: Preamble Code Sequence Length (symbols)

Opens the Preamble Code Editor where you can edit the preamble code sequence by inputting 0, - or + directly in the form. After you click OK, the resultant code is then displayed in the parameter field.

"+" and "-" denote +1 and -1, respectively.

Preamble Code Sequence Length (symbols)

Range: 0~1024

Default 31

Coupling: Preamble Code Sequence

This parameter indicates the length of the customized preamble code sequence.

SYNC Length (PSR) (symbols)

Choices:

Non-HRP-ERDEV: 16, 64, 1024, 4096 symbols

HRP-ERDEV BPRF: 16, 24, 32, 48, 64, 96, 128, 256, 1024 and 4096 symbols

HRP-ERDEV HPRF: 16, 24, 32, 48, 64, 96, 128 and 256 symbols

Default: 64 symbols

The number of symbols in the packet sync sequence.

Delta Length

Choices:

Non-HRP-ERDEV: 4, 16 and 64

HRP-ERDEV BPRF: 4

HRP-ERDEV HPRF: 4, 16 and 64

Default: 16

Coupling: Channel Number and Code Index

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 1~8, Delta Length can be 16 or 64.

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 9~24, Delta Length will be 4.

The length of the delta function. The delta function is used to extend the preamble code to the preamble symbol.

The value of "Delta Length" depends on values of "HRP UWB Mode", "Channel Number" and "Code Index".

SFD Sequence

Range: maximum is 1024

Default: 0 + 0 - + 0 0 - 0 + 0 - + 0 0 - - 0 0 + 0 - 0 + 0 + 0 0 0 - 0 - 0 - 0 0 + 0 - - 0 - + 0 0 0 0 + + 0 0 - - - + - + + 0 0 0 0 + +

Coupling: SFD Length (symbols)

Opens the SFD Sequence Editor where you can edit the SFD sequence by inputting 0, - or + directly in the form. After you click OK, the resultant code is then displayed in the parameter field.

"+" and "-" denote +1 and -1, respectively.

SFD Length (symbols)

Choices for Non-HRP-ERDEV:

8 symbols for the data rate of 850Kb/s, 6.81Mb/s and 27.24Mb/s

64 symbols for the data rate of 110Kb/s

Choices for HRP-ERDEV BPRF and HRP-ERDEV HPRF:

8 symbols when SFD# = 0, 2;

4 symbols when SFD# = 1;

16 symbols when SFD# = 3;

32 symbols when SFD# = 4;

Default for Non-HRP-ERDEV: 64 symbols

Default for HRP-ERDEV BPRF and HRP-ERDEV HPRF: 8 symbols

Coupling: Data Rate

If Data Rate is 850 kb/s, 6.81 Mb/s or 27.24 Mb.s, SFD Length will be 8 symbols.

If Data Rate is 110 kb/s, SFD Length will be 64 symbols.

Read only. Indicates the number of symbols in the SFD.

PHR Bit Rate

Choices:

Non-HRP-ERDEV: 850 kb/s and 110 kb/s

HRP-ERDEV BPRF: 975 kb/s, 7.8 Mb/s

HRP-ERDEV HPRF: 3.9 Mb/s, 7.8 Mb/s, 15.6 Mb/s and 31.2 Mb/s

Default: 110 kb/s

Coupling: Data Rate

If Data Rate is greater than or equal to 850 kb/s, PHR Bit Rate will be 850 kb/s.

If Data Rate is equal to 110 kb/s, PHR Bit Rate will be 110 kb/s.

Indicates the bit rate of PHR.

3. PSDU Settings

Hop Bursts

Choices:

Non-HRP-ERDEV: 2, 8, 32

HRP-ERDEV BPRF: 2

HRP-ERDEV HPRF: N/A

Default: 8

Coupling: HRP UWB Mode, Channel Number, and Preamble Code Index

Non-HRP-ERDEV:

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 1~8, Hop Bursts can be 8 or 32.

If Channel Number is 0~3, 5~6, 8~10 or 12~14 with Code Index of 9~24, Hop Bursts will be 2.

If Channel Number is 4, 7, 11, 15 with Code Index of 1~8, Hop Bursts will be 8.

If Channel Number is 4, 7, 11, 15 with Code Index of 9~24, Hop Bursts will be 2.

The hop bursts is the number of burst positions that may contain an active burst.

Chips Per Burst

Choices:

Non-HRP-ERDEV:

2, 8, 64 and 512 when Hop Bursts is 2

1, 2, 16 and 128 when Hop Bursts is 8

1, 2, 4 and 32 when Hop Bursts is 32

HRP-ERDEV BPRF: 8

HRP-ERDEV HPRF: N/A

Default: 128

Coupling: HRP UWB Mode and Hop Bursts

Non-HRP-ERDEV:

If Hop Bursts is 2, Chips Per Burst can be 2 | 8 | 64 | 512.

If Hop Bursts is 8, Chips Per Burst can be 1 | 2 | 16 | 128.

If Hop Bursts is 32, Chips Per Burst can be 1 | 2 | 4 | 32.

The number of chips in single burst.

Convolutional Code Restraint Length (K)

Choices: CL3 (K=3), CL7 (K=7)

Default: CL3 (K=3)

This parameter specifies the constraint length of the convolutional code in use by the transmitter and receiver applying to the PHR and PSDU for HRP-ERDEV in the HPRF.

PHR Data Rate Mode

Choices:

HRP-ERDEV BPRF: DRBM_LP, DRBM_HP

HRP-ERDEV HPRF: DRHM_LR, DRHM_HR

Default: DRBM_LP for HRP-ERDEV BPRF

Determines bit rates of PHR field and PSDU field.

Viterbi Rate

Choices: 0.5 and 1

Default: 0.5

Coupling: HRP UWB Mode and Chips Per Burst

Indicates the rate of systematic convolutional encoding.

Data Rate

Choices:

Non-HRP-ERDEV: 110kb/s, 850kb/s, 1.70Mb/s, 6.81Mb/s and 27.24Mb/s

HRP-ERDEV BPRF: 6.81 Mb/s

HRP-ERDEV HPRF: 6.81 Mb/s, 7.8 Mb/s, 27.24 Mb/s and 31.2 Mb/s

Default: 110 kb/s

Coupling: HRP UWB Mode, Hop Bursts, Chips Per Burst, and Viterbi Rate

Indicates the user-information rate, considering FEC.

Mean PRF

Choices:

Non-HRP-ERDEV: 3.9 MHz, 15.6 MHz, 62.4 MHz

HRP-ERDEV BPRF: 62.4MHz

HRP-ERDEV HPRF: 124.8 MHz, 249.6 MHz

Default: 15.6 MHz

The mean PRF parameter is the average PRF during the PSDU portion of a PHY frame, which depends on the value of "Hop Bursts".

PHY Payload

MAC Header

Default: 8821,01,1234,5678,4321,8765

Click the button on the right to bring up an editor to configure the MAC Header. See Figure 35 in IEEE Std 802.15.4-2011 for details.

Data Type

Choices: PN9 | PN15 | Custom Bit Pattern | User File

Default: PN9

Click the button on the right to bring up an editor for payload data type selection.

Maximum Data Length (Octets)

Choices:

Non-HRP-ERDEV: 127 Octets

HRP-ERDEV BPRF: 127 Octets

HRP-ERDEV HPRF: 1023 Octets, 2047 Octets, 4095 Octets

Default: 127 Octets

Maximum Data Length of the payload field

Data Length (Octets)

Range:

Non-HRP-ERDEV: 0-127

HRP-ERDEV BPRF: 0-127

HRP-ERDEV HPRF: 0-1023 or 0-2047 or 0-4095

Default: 20

Enter the length of MAC payload in octets. Use space to split different length between different frame, the number of space separated values should be less than or equal to the number of frames.

Data Mode

Choices: Continuous | Truncated

Default: Continuous

Select the data mode applied to MAC payload for a multi-frame waveform. Continuous mode will have data bits continuously distributed across multi-frame. Truncated mode will have the same payload data bits for all the frames, with the data size truncated for one frame.

MAC FCS

Choices: On | Off

Default: On

Enable or disable MAC FCS in the PSDU. When turned off, it can be used to simulate an invalid FCS case, since FCS part is actually filled with user data bits. See Figure 35 in IEEE Std 802.15.4-2011 for details.

FCS Type

Choices: 2-octet | 4-octet

Default: 2-octet

The MAC may optionally employ the 4-octet FCS with the HRP UWB PHY in HPRF mode, but in all other HRP UWB PHY modes shall employ the 2-octet FCS.

Frame Length

Range:

Non-HRP-ERDEV: 0-127

HRP-ERDEV BPRF: 0-127

HRP-ERDEV HPRF: 0-1023 or 0-2047 or 0-4095

Default: 33

Coupling: Frame Length is equal to the sum of the length of MAC Header, Data Length and MAC FCS and depends on Maximum Data Length

Indicates the total length of the PSDU frame.

3/4. STS Settings

STS Type

Choices: AES-128 STS Sequence | Fixed STS Sequence

Default: AES-128 STS Sequence

Sets the type of STS Sequence.

AES-128 STS Sequence - STS Settings will be the same as that of the SS2020 release.

Fixed STS Sequence - user-defined instead of being generated by DRBG in real time. Fixed STS Sequence should be composed of integer segments of 128 sequences, which is shown as follows.

The frame structure of Fixed STS Sequence

The length of Fixed STS Sequence should be determined by the Active Segment Length and Number of Active Segments.

If the length of the fixed STS Sequence input by users is larger than the expected length, the input sequence will be truncated. Otherwise, the input sequence will be repeated.

96-bit Upper Part of V

Default: 0x362EEB34C44FA8FBD37EC3CA

This parameter supplies the upper 96-bits of the 128-bit value V used in the DRBG for generating the STS.

32-bit Counter Part of V (Initial Value)

Default: 0x1F9A3DE4

This parameter supplies the lower 32-bits of the 128-bit value V used in the DRBG for generating the STS.

128-bit Key

Default: 0x14148674D1D336AAF86050A814EB220F

Coupling: 96-bit Upper Part of V and 32-bit Counter Part

This parameter specifies the key used in the DRBG for generating the STS.

Fixed STS Sequence

Fixed STS Sequence can be input directly or edited by STS Sequence Editor that is shown below.

Delta Length for STS

Choices:

HRP-ERDEV BPRF: 8 | 64 (optional)

HRP-ERDEV HPRF: 4 | 32 (optional)

Default:

HRP-ERDEV BPRF: 8

HRP-ERDEV HPRF: 4

Specifies the length L of the delta function used to spread the 128-bit pseudo-random number.

Active Segment Length

Choices:

HRP-ERDEV BPRF: 64 in units of 512 chips (~1 µs)

HRP-ERDEV HPRF: 16, 32, 64, 128, 256 in units of 512 chips (~1 µs)

Default: 64 in units of 512 chips (~1 µs)

Active Segment Length specifies the length of active segment in units of 512 chips (~1 µs).

Number of Active Segments

Choices:

HRP-ERDEV BPRF: 1

HRP-ERDEV HPRF: 1, 2, 3, 4

Default: 1

Number of Active Segments indicates the number of STS segments in the transmitted PPDU.

STS Additional Gap Duration

Range: 0~127 in units of 4 chips (~8 ns)

Default: 0

Coupling: Maximum Data Length

If Maximum Data Length is 1023, STS Additional Gap Duration can be 0~127.

If Maximum Data Length is 2047 or 4096, STS Additional Gap Duration will be 0.

This parameter specifies an additional gap in units of 4 chips (~8 ns) between the payload and the STS for HRP-ERDEV in the HPRF and STS packet configuration value of 2.

When this feature is being employed (the value is greater than 0), the feature of extending the PHY payload length field will be disabled.

4. Impairments

Symbol Timing Error

Range: -300 to 300 ppm

Default: 0

Enter the shift to the standard sample rate in ppm. This error will be added to standard sample clock in the waveform header.

Frequency Offset

Range: -200 - 200 kHz

Default: 0

Enter the offset to the nominal carrier frequency in Hz.

5. Pulse Shaping Filter

Filter Type

Choices: 8-order Butterworth | Root Raised Cosine | User Defined

Default: Root Raised Cosine

Select the pulse shape filter type to be applied to the waveform.

Pulse Duration

Choices:

2 ns for Channel 0~3, 5~6, 8~10, 12~14

0.75 ns for Channel 4, 11

0.92 ns for Channel 7

0.74 ns for Channel 15

Default: 2 ns for Channel 0

Coupling: Channel Number

Pulse Duration is the coefficient used in Root Raised Cosine function, which determines the 3dB cut-off bandwidth of the pulse.

Beta

Choices: 0.5

Read only. Beta is the roll-off factor of Root Raised Cosine function.

Filter Coefficients

Opens the Filter Editor, allowing you to input filter coefficients or select a file that contains filter coefficients.

The interval between two consecutive filter coefficients equals 2 ns/Oversampling Ratio.

The maximum length of the impulse response is 8 chips (8*2 ns).

Minimum Phase

Default: On

Minimum phase is the minimum phase Root Raised Cosine (RRC) filter. The minimum phase system refers to minimum group delay of its same-magnitude(frequency response) system. An example of RRC and minimum phase RRC filters are shown below.

6. Multi-path Channel Settings

Multi-path

Choices: Off | On

Default: Off

Selects the state of the multi-path channel.

Multi-path Channel Settings (Static)

Opens the Multipath Editor where you can insert, delete, and clear channels, and edit channel settings. After you click OK, the number of paths appears in the parameter field.