If you did QPSK with 1/2 FEC you'd get about 6kbaud good down to 6-9dB SNR. Nick the Digital Radio Mondiale Mode A modulation and you could probably get 16.4 or 23.6kbps with 10.7dB or 15.3dB SNR and ~2/3 FEC rate.
September 23, 2026 at 6:15 PM
If you did QPSK with 1/2 FEC you'd get about 6kbaud good down to 6-9dB SNR. Nick the Digital Radio Mondiale Mode A modulation and you could probably get 16.4 or 23.6kbps with 10.7dB or 15.3dB SNR and ~2/3 FEC rate.
Viewdata worked down to 1200 Baud (1200/75) and downloaded roughly a page (40x25=1000 bytes) every few seconds. The channel raster for LW is 9kHz, so with about 8k used and a decent channel filter I reckon you could get about 6.6kbaud with BPSK or FSK. With QPSK/4FSK/4PSK you can double that.
September 23, 2026 at 6:03 PM
Viewdata worked down to 1200 Baud (1200/75) and downloaded roughly a page (40x25=1000 bytes) every few seconds. The channel raster for LW is 9kHz, so with about 8k used and a decent channel filter I reckon you could get about 6.6kbaud with BPSK or FSK. With QPSK/4FSK/4PSK you can double that.
[20/30] 289 Likes, 18 Comments, 1 Posts
2608.19865, eess․SP | cs․AR, 20 Aug 2026
🆕A 39pJ/b 7.3Gbps 1.3mm$^2$ Multi-Subcarrier Massive MU-MIMO-OFDM Detector Exploiting Beamspace Sparsity and Frequency-Domain Correlation in 22FDX
Abhishek Kumar, Seyed Hadi Mirfarshbafan, Oscar Castañeda, Chris...
2608.19865, eess․SP | cs․AR, 20 Aug 2026
🆕A 39pJ/b 7.3Gbps 1.3mm$^2$ Multi-Subcarrier Massive MU-MIMO-OFDM Detector Exploiting Beamspace Sparsity and Frequency-Domain Correlation in 22FDX
Abhishek Kumar, Seyed Hadi Mirfarshbafan, Oscar Castañeda, Chris...
August 25, 2026 at 12:05 AM
[20/30] 289 Likes, 18 Comments, 1 Posts
2608.19865, eess․SP | cs․AR, 20 Aug 2026
🆕A 39pJ/b 7.3Gbps 1.3mm$^2$ Multi-Subcarrier Massive MU-MIMO-OFDM Detector Exploiting Beamspace Sparsity and Frequency-Domain Correlation in 22FDX
Abhishek Kumar, Seyed Hadi Mirfarshbafan, Oscar Castañeda, Chris...
2608.19865, eess․SP | cs․AR, 20 Aug 2026
🆕A 39pJ/b 7.3Gbps 1.3mm$^2$ Multi-Subcarrier Massive MU-MIMO-OFDM Detector Exploiting Beamspace Sparsity and Frequency-Domain Correlation in 22FDX
Abhishek Kumar, Seyed Hadi Mirfarshbafan, Oscar Castañeda, Chris...
Amazing success on 30M using FLArq and qpsk-125 on a 600ish mile path tonight. Passed emails flawlessly. So used to using mfsk type modes I was truly surprised by psk!
August 14, 2026 at 5:08 AM
Amazing success on 30M using FLArq and qpsk-125 on a 600ish mile path tonight. Passed emails flawlessly. So used to using mfsk type modes I was truly surprised by psk!
- 고급 변조 기술(QPSK/QAM)과 전방 오류 수정(FEC)을 적용하여 저전력, 고신뢰성, 강력한 보안을 동시에 확보
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
July 31, 2026 at 12:07 PM
- 고급 변조 기술(QPSK/QAM)과 전방 오류 수정(FEC)을 적용하여 저전력, 고신뢰성, 강력한 보안을 동시에 확보
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
- 고급 변조 기술(QPSK/QAM)과 전방 오류 수정(FEC)을 적용하여 저전력, 고신뢰성, 강력한 보안을 동시에 확보
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
July 31, 2026 at 11:59 AM
- 고급 변조 기술(QPSK/QAM)과 전방 오류 수정(FEC)을 적용하여 저전력, 고신뢰성, 강력한 보안을 동시에 확보
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
- 이를 통해 무손실 오디오 스트리밍과 초고속 데이터 전송이 가능해지며, 2026년 하반기 공식 도입될 예정 (🧵2/2)
;-)
www.youtube.com/watch?v=QPSK...
Der Ohrwurm geht aufs Haus..
(Hier ist Frau Koschmidder neben Omma Brömmelkamp und Frau MeierMüllerSchulzeSchmidt der klassische anonymisierte Namen im RD)
www.youtube.com/watch?v=QPSK...
Der Ohrwurm geht aufs Haus..
(Hier ist Frau Koschmidder neben Omma Brömmelkamp und Frau MeierMüllerSchulzeSchmidt der klassische anonymisierte Namen im RD)
June 15, 2026 at 12:58 PM
;-)
www.youtube.com/watch?v=QPSK...
Der Ohrwurm geht aufs Haus..
(Hier ist Frau Koschmidder neben Omma Brömmelkamp und Frau MeierMüllerSchulzeSchmidt der klassische anonymisierte Namen im RD)
www.youtube.com/watch?v=QPSK...
Der Ohrwurm geht aufs Haus..
(Hier ist Frau Koschmidder neben Omma Brömmelkamp und Frau MeierMüllerSchulzeSchmidt der klassische anonymisierte Namen im RD)
Tianwen-2 today again a High Data rate, likely QPSK at 2.048 Mbaud.
June 15, 2026 at 12:24 PM
Tianwen-2 today again a High Data rate, likely QPSK at 2.048 Mbaud.
tRump lied about Black jobs again. He says unemployment is the best it's ever been, but Black workers are at 6.6% – way above Biden's record low of 4.8%. His administration is slashing jobs & equity programs, sparking a recession in Black communities. tRump's "miracle" is a lie.
mcsp.short.gy/qPsK
mcsp.short.gy/qPsK
Trump’s Black Jobs Lie and the Reality of Black Unemployment
Federal data contradicts the president's claim, highlighting the stark reality of Black unemployment in South Side neighborhoods.
mcsp.short.gy
June 14, 2026 at 8:39 AM
tRump lied about Black jobs again. He says unemployment is the best it's ever been, but Black workers are at 6.6% – way above Biden's record low of 4.8%. His administration is slashing jobs & equity programs, sparking a recession in Black communities. tRump's "miracle" is a lie.
mcsp.short.gy/qPsK
mcsp.short.gy/qPsK
That's still on QPSK there for the 'Modulation scheme' option, need to tick the option for 8PSK
June 11, 2026 at 8:57 PM
That's still on QPSK there for the 'Modulation scheme' option, need to tick the option for 8PSK
You need to select 8PSK there for the last option, it's on QPSK
June 11, 2026 at 8:52 PM
You need to select 8PSK there for the last option, it's on QPSK
Yeah, this IQ constellation looks good. EVM was at about 10.2%. This QPSK carrier passes lock.
Guess I gotta dig deeper into what the issue is.
Guess I gotta dig deeper into what the issue is.
June 5, 2026 at 7:02 PM
Yeah, this IQ constellation looks good. EVM was at about 10.2%. This QPSK carrier passes lock.
Guess I gotta dig deeper into what the issue is.
Guess I gotta dig deeper into what the issue is.
Once they upconvert and transmit their signal, both sides matter. If they transmit QPSK at 1 million symbols per second (MSps), it will occupy around 1.3 MHz.
The data rate will be 2 Mbps (recall that QPSK uses 2 bits per symbol), including any overhead like channel coding and frame headers.
The data rate will be 2 Mbps (recall that QPSK uses 2 bits per symbol), including any overhead like channel coding and frame headers.
June 3, 2026 at 11:05 AM
Once they upconvert and transmit their signal, both sides matter. If they transmit QPSK at 1 million symbols per second (MSps), it will occupy around 1.3 MHz.
The data rate will be 2 Mbps (recall that QPSK uses 2 bits per symbol), including any overhead like channel coding and frame headers.
The data rate will be 2 Mbps (recall that QPSK uses 2 bits per symbol), including any overhead like channel coding and frame headers.
T115 だわ。これが必要だな https://sparkle.konoris.com/detail/3/
STD-T115方式 同報系 防災行政無線 受信・測定ソフトウェア STD-T115 Decoder | Sparkle
ARIB STD-T115 方式（第2編 QPSKナロー方式）のデジタル同報系 防災行政無線の受信・測定ができるソフトウェアです。 I/Q 信号をソフトウェアに入力することで動作します。
sparkle.konoris.com
May 8, 2026 at 9:25 AM
T115 だわ。これが必要だな https://sparkle.konoris.com/detail/3/
4 値 FSK っぽい ? だとしたらおそらく ARIB STD-T116 だ。QPSK の STD-T115 なら市販のデコーダアプリケーションがあるけどこれは無理
May 8, 2026 at 9:20 AM
4 値 FSK っぽい ? だとしたらおそらく ARIB STD-T116 だ。QPSK の STD-T115 なら市販のデコーダアプリケーションがあるけどこれは無理
Bluesky's Top 10 Trending Words (past 10min):
💨x79 - klay
💨x41 - stallion
💨x1* - epstein 🔓
💨x1* - ukraine 🔓
💨x25 - okamoto
💨x1* - democracy 🔓
💨x22 - megan
💨x21 - taylen
💨x17 - correspondents
💨x16 - browns
*🔓 = Unlocked Emergency Words (see img)
#ListenToBlackVoices
(Something not right? Reply!)
![Emoji Legend
💨x# | "Increased Trending Rate" for a Word (meaningful value; "💨x8 - burger" will mean "burger" is trending at 8 times its own normal rate for this time of day)
🔓 | "Unlocked" Ongoing Emergency Word (such words are not weighted down by their own previous usage; their *ongoing* increased usage--weeks, months, years--would otherwise move them down the list.)
[PREVIOUSLY USED]
⚠️💨# | "Trend Strength Rating"
⚠️🌀💨 | "Trend Strength Rating" (see above)
⚠️🌀 CAT. # | [same; "CAT." = Category, like hurricane]
💬# | 10min Post Count
🆎# | 10min Word Count
🙂# | 10min Emoji Count](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:mcb6n67plnrlx4lg35natk2b/bafkreigp6bgag3jzkool6uxrujpcrwtn6zkd7cbfrmevhaxaqhhewgolmu)
April 25, 2026 at 8:10 PM
प्रदर्शित कमजोर-क्षेत्र होमोडाइन रिसीवर चतुर्थांश (4-अवस्था) QPSK प्रकाशिक संचार को सक्षम बनाता है जिसमें बाइनरी एन्कोडिंग की तुलना में अधिक पारस्परिक सूचना होती है। यह फोटॉन-संख्या-संकल्प पहचान को क्वांटम कुंजी वितरण प्रोटोकॉल के लिए एक व्यवहार्य विकल्प के रूप में साबित करता है।
QPSK प्रकाशिक संचार में कमजोर-क्षेत्र होमोडाइन रिसीवर का प्रदर्शन
iq.fp2.dev
April 25, 2026 at 8:04 PM
प्रदर्शित कमजोर-क्षेत्र होमोडाइन रिसीवर चतुर्थांश (4-अवस्था) QPSK प्रकाशिक संचार को सक्षम बनाता है जिसमें बाइनरी एन्कोडिंग की तुलना में अधिक पारस्परिक सूचना होती है। यह फोटॉन-संख्या-संकल्प पहचान को क्वांटम कुंजी वितरण प्रोटोकॉल के लिए एक व्यवहार्य विकल्प के रूप में साबित करता है।
Der demonstrierte Schwachfeld-Homodynempfänger ermöglicht quaternäre (4-Zustand) QPSK-optische Kommunikation mit höherer gegenseitiger Information als binäre Kodierung. Beweist, dass die Photonen-Zahlen-auflösende Detektion eine praktikable Alternative für Quantenschlüsselvert...
Leistung des Schwachfeld-Homodynempfängers in der optischen QPSK-Kommunikation
iq.fp2.dev
April 25, 2026 at 8:04 PM
Der demonstrierte Schwachfeld-Homodynempfänger ermöglicht quaternäre (4-Zustand) QPSK-optische Kommunikation mit höherer gegenseitiger Information als binäre Kodierung. Beweist, dass die Photonen-Zahlen-auflösende Detektion eine praktikable Alternative für Quantenschlüsselvert...
Le récepteur homodyne en champ faible démontré permet une communication optique QPSK quaternaire (4-états) avec une information mutuelle plus élevée que l'encodage binaire. Prouve que la détection résolvant le nombre de photons est une alternative viable pour les protocoles de...
Performance du Récepteur Homodyne en Champ Faible dans la Communication Optique QPSK
iq.fp2.dev
April 25, 2026 at 8:03 PM
Le récepteur homodyne en champ faible démontré permet une communication optique QPSK quaternaire (4-états) avec une information mutuelle plus élevée que l'encodage binaire. Prouve que la détection résolvant le nombre de photons est une alternative viable pour les protocoles de...
Se demuestra que el receptor homodino de campo débil permite comunicación óptica QPSK cuaternaria (4 estados) con mayor información mutua que la codificación binaria. Demuestra que la detección de resolución de número de fotones es una alternativa viable para protocolos de dis...
Desempeño del Receptor Homodino de Campo Débil en Comunicación Óptica QPSK
iq.fp2.dev
April 25, 2026 at 8:03 PM
Se demuestra que el receptor homodino de campo débil permite comunicación óptica QPSK cuaternaria (4 estados) con mayor información mutua que la codificación binaria. Demuestra que la detección de resolución de número de fotones es una alternativa viable para protocolos de dis...
약약-장 호모다인 수신기가 이진 부호화보다 높은 상호 정보량으로 사원(4-상태) QPSK 광통신을 가능하게 함을 입증했습니다. 광자수 결정 검출이 양자 키 분배 프로토콜의 실행 가능한 대안임을 증명합니다.
#양자통신 #양자암호학 #연구
#양자통신 #양자암호학 #연구
QPSK 광통신에서의 약약-장 호모다인 수신기 성능
iq.fp2.dev
April 25, 2026 at 8:03 PM